var locations = {
  "West Vancouver": {
    inf: ["West Vancouver"],
    regions: {
      "West Vancouver": {
        inf: [22, 49.337204, -123.182320, 13],
        buildings: {
          "Galleries on the Bay": {inf: [122, 49.374454, -123.273979, "6390 Bay St"]},
          "Water's Edge": {inf: [136, 49.327976, -123.132530, "526 Water's Edge Crescent"]}
        }
      }
    }
  },
  "North Vancouver": {
    inf: ["North Vancouver"],
    regions: {
      "Lower North Vancouver": {
        inf: [14, 49.312424, -123.065674, 14],
        buildings: {
          "Atrium West": {inf: [99, 49.310883, -123.080566, "172 Victory Ship Way"]},
          "Avondale": {inf: [128, 49.321625, -123.065926, "1468 St Andrews Ave"]},
          "Envy": {inf: [89, 49.314156, -123.078117, "160 West 3rd St"]},
          "Esplanade": {inf: [100, 49.310856, -123.078590, "188 East Esplanade"]},
          "Esplanade West": {inf: [102, 49.310741, -123.078201, "168 East Esplanade"]},
          "Premiere": {inf: [103, 49.310547, -123.077728, "138 East Esplanade"]},
          "The Landing": {inf: [101, 49.309792, -123.076271, "100 East Esplanade"]},
          "Touchstone": {inf: [96, 49.323666, -123.101463, "1633 MacKay Ave"]},
          "Ventana": {inf: [140, 49.314213, -123.080437, "175 West 2nd St."]},
          "Vista Place East Tower": {inf: [126, 49.320171, -123.076057, "1320 Chesterfield Ave"]},
          "Vista Place West Tower": {inf: [125, 49.320229, -123.075241, "158 W13th St"]}
        }
      },
      "Upper North Vancouver": {
        inf: [18, 49.336926, -123.059753, 14],
        buildings: {
          "Branches": {inf: [168, 49.332375, -123.041580, "2601 Whiteley Ct."]},
          "Mira On The Park": {inf: [113, 49.317291, -123.076187, "683 West Victoria Park Ave"]},
          "Noma": {inf: [109, 49.320896, -123.091934, "728 West 14th St"]},
          "Raven Woods": {inf: [129, 49.307835, -122.971169, "Ravenwoods Dr."]}
        }
      }
    }
  },
  "Vancouver": {
    inf: ["Vancouver"],
    regions: {
      "Coal Harbour": {
        inf: [12, 49.286842, -123.121376, 14],
        buildings: {
          "Fairmount Pacific Rim": {inf: [76, 49.287743, -123.116516, "1011 W Cordova St"]},
          "Flatiron": {inf: [78, 49.286465, -123.121986, "1277 Melville St"]},
          "Ritz": {inf: [79, 49.286465, -123.121986, "1211 Melville St"]},
          "Sapphire": {inf: [80, 49.288269, -123.123062, "1188 West Pender St"]}
        }
      },
      "Downtown": {
        inf: [11, 49.277660, -123.114166, 14],
        buildings: {
          "33 West Pender": {inf: [60, 49.280476, -123.103683, "33 West Pender"]},
          "999 Seymour": {inf: [169, 49.278610, -123.121994, "999 Seymour St"]},
          "Alto": {inf: [95, 49.277775, -123.127853, "1205 Howe St"]},
          "Atelier": {inf: [61, 49.279133, -123.117401, "833 Homer St"]},
          "Donovan": {inf: [51, 49.277409, -123.121948, "1055 Richards St"]},
          "Elan": {inf: [62, 49.275925, -123.126060, "1255 Seymour St."]},
          "Espana 1": {inf: [63, 49.278763, -123.107643, "689 Abbott St."]},
          "Espana 2": {inf: [64, 49.279488, -123.100006, "188 Keefer St"]},
          "Espana 3": {inf: [65, 49.279358, -123.107635, "633 Abbott St"]},
          "Flagship": {inf: [52, 49.273769, -123.112366, "8 Smithe Mews"]},
          "Grace II": {inf: [67, 49.274860, -123.125366, "1280 Richards St"]},
          "H+H": {inf: [59, 49.276093, -123.122452, "1133 Homer"]},
          "Hotel Georgia": {inf: [159, 49.283260, -123.119102, "699 Howe St"]},
          "Jameson House": {inf: [66, 49.286217, -123.115234, "838 W. Hastings St"]},
          "L'Hermitage En Ville": {inf: [69, 49.280231, -123.117683, "788 Richards St"]},
          "Mode": {inf: [70, 49.279282, -123.119843, "538 Smithe St"]},
          "Patina": {inf: [142, 49.281918, -123.125580, "1028 Barclay"]},
          "Pure": {inf: [71, 49.277847, -123.128975, "1252 Hornby St."]},
          "Raffles": {inf: [110, 49.278416, -123.115028, "811 Cambie Street"]},
          "Shangri-La": {inf: [73, 49.286133, -123.123772, "1128 W Georgia St"]},
          "Smart": {inf: [58, 49.283207, -123.100372, "168 Powell St"]},
          "Terminus": {inf: [123, 49.283791, -123.104942, "36 Water St"]},
          "TV Towers 1": {inf: [57, 49.278961, -123.115768, "788 Hamilton Street"]},
          "TV Towers 2": {inf: [84, 49.278416, -123.115288, "233 Robson St"]},
          "Vita": {inf: [72, 49.279438, -123.120087, "565 Smithe St."]},
          "Woodwards W-32": {inf: [74, 49.282948, -123.106903, "108 W Cordova St"]},
          "Woodwards W-43": {inf: [75, 49.282990, -123.107155, "128 W Cordova St"]}
        }
      },
      "False Creek North": {
        inf: [10, 49.273518, -123.121292, 14],
        buildings: {
          "Coopers Lookout": {inf: [49, 49.274384, -123.111977, "33 Smithe Mews"]},
          "Coopers Pointe": {inf: [50, 49.273319, -123.114250, "980 Cooperage Mews"]},
          "Erickson": {inf: [56, 49.274757, -123.131821, "1500 Homer Mews"]},
          "Mariner": {inf: [54, 49.273743, -123.113396, "918 Cooperage Way"]}
        }
      },
      "Vancouver East": {
        inf: [24, 49.263325, -123.071938, 13],
        buildings: {
          "Domain": {inf: [132, 49.260410, -123.101677, "2812 Main St"]},
          "Ginger": {inf: [131, 49.278397, -123.099785, "718 Main Street"]},
          "Sophia": {inf: [93, 49.261078, -123.098297, "298 East 11th Ave"]},
          "The View": {inf: [152, 49.281174, -123.060707, "2150 E. Hastings St"]}
        }
      },
      "Vancouver West": {
        inf: [23, 49.254696, -123.160858, 13],
        buildings: {
          "1241 Homer": {inf: [153, 49.274834, -123.124336, "1241 Homer St"]},
          "Affiniti": {inf: [81, 49.265011, -123.117203, "587 West 7th Ave"]},
          "Black Swan Apartments": {inf: [167, 49.268085, -123.171631, "2008 Bayswater Street"]},
          "Camera": {inf: [82, 49.264534, -123.140579, "1675 West 8th Ave"]},
          "Coast": {inf: [160, 49.270966, -123.251778, "6063 Iona Dr"]},
          "Coco On Spruce": {inf: [97, 49.258755, -123.128891, "1088 W.14th Ave"]},
          "CrossRoads": {inf: [83, 49.264359, -123.115623, "522 West 8th Ave"]},
          "Duke": {inf: [53, 49.256477, -123.184944, "3595 W 18th Ave"]},
          "Exchange": {inf: [134, 49.267693, -123.113136, "1940 Wylie St"]},
          "First in Kits": {inf: [94, 49.270351, -123.146095, "1808 W 1st Ave"]},
          "Kore": {inf: [141, 49.268700, -123.146095, "Burrard & 3rd"]},
          "LOFT 495": {inf: [85, 49.265583, -123.114891, "495 West 6th Ave"]},
          "Lumen": {inf: [130, 49.268852, -123.142609, "1675 W 3rd Ave"]},
          "Mantra": {inf: [55, 49.267956, -123.142807, "1680 W 4th Ave"]},
          "Musee": {inf: [161, 49.264778, -123.143005, "1690 West 8th Ave"]},
          "Pathways": {inf: [143, 49.258675, -123.238319, "5777-5779 Birney Ave"]},
          "Pulse": {inf: [137, 49.263351, -123.150215, "2550 Maple St"]},
          "Stirling House": {inf: [124, 49.270664, -123.253578, "6080 IONA DR"]},
          "Tapestry (East Tower)": {inf: [87, 49.260075, -123.120392, "2851 Heather Street"]},
          "Tapestry (North Tower)": {inf: [86, 49.260159, -123.120819, "750 West 12th Ave"]},
          "The Beasley": {inf: [155, 49.278549, -123.118279, "888 Homer"]},
          "The Zone": {inf: [158, 49.263519, -123.128326, "1068 W Broadway Ave"]},
          "Vine (Centre Tower)": {inf: [90, 49.263466, -123.156525, "2268 West Broadway"]},
          "Vine (East Tower)": {inf: [91, 49.263493, -123.155884, "2228 West Broadway St"]},
          "Vine (West Tower)": {inf: [92, 49.263493, -123.157249, "2288 Broadway"]},
          "West Point Grey": {inf: [156, 49.263821, -123.208000, "4463 W10th Ave"]}
        }
      },
      "West End": {
        inf: [13, 49.284885, -123.136139, 14],
        buildings: {
          "O2": {inf: [135, 49.286900, -123.141632, "1762 Davie St"]}
        }
      }
    }
  },
  "Richmond": {
    inf: ["Richmond"],
    regions: {
      "Richmond North": {
        inf: [16, 49.172390, -123.144722, 13],
        buildings: {
          "Acqua": {inf: [139, 49.172642, -123.137344, "No 3 Rd"]},
          "Fullerton": {inf: [115, 49.167957, -123.122665, "Garden City Road"]},
          "Garden City-Residences": {inf: [150, 49.167606, -123.121956, "6333 Katsura St"]},
          "Lotus": {inf: [149, 49.170216, -123.144081, "7371 B Westminster Hwy"]},
          "Lotus B": {inf: [164, 49.170216, -123.144081, "7371 B Westminster Hwy"]},
          "Lotus C": {inf: [165, 49.170216, -123.144081, "7371 C Westminster Hwy"]},
          "Meridian Gate": {inf: [157, 49.181789, -123.118889, "9199 Tomicki Ave"]},
          "Versante": {inf: [114, 49.173569, -123.133606, "8280 Lansdowne Rd"]}
        }
      },
      "Richmond South": {
        inf: [15, 49.137699, -123.147469, 13],
        buildings: {
          "Chelsea Estates": {inf: [151, 49.155609, -123.115067, "9688 Keefer Ave"]},
          "London Station": {inf: [148, 49.117702, -123.155449, "6233 London Rd"]},
          "Nakade": {inf: [162, 49.117535, -123.156006, "13251 Princess St"]}
        }
      }
    }
  },
  "Burnaby": {
    inf: ["Burnaby"],
    regions: {
      "Burnaby East": {
        inf: [17, 49.221130, -122.931946, 14],
        buildings: {
          "Cadence": {inf: [108, 49.218384, -122.983490, "7337 Macpherson"]}
        }
      },
      "Burnaby North": {
        inf: [19, 49.254250, -122.954002, 13],
        buildings: {
          "Altaire": {inf: [104, 49.279175, -122.902634, "9222 Univercity Crescent"]},
          "AXIS": {inf: [105, 49.243912, -123.063614, "7170 Kingsway"]},
          "Luxe": {inf: [133, 49.263577, -122.988380, "Brentwood Area"]},
          "Montage": {inf: [116, 49.264137, -122.997955, "4723 Dawson St"]},
          "Watercolours": {inf: [112, 49.264305, -122.992332, "2289 Yukon Cres"]}
        }
      },
      "Burnaby South": {
        inf: [2, 49.219616, -122.996407, 13],
        buildings: {
          "Belvedere": {inf: [106, 49.210758, -122.962074, "Sandborne Dr"]},
          "Centrepoint": {inf: [111, 49.228432, -122.996353, "4800 Hazel St"]},
          "Decorus": {inf: [117, 49.234127, -123.013496, "5588 Patterson Ave"]},
          "Esprit 1": {inf: [119, 49.219280, -122.954948, "7328 Arcola St"]},
          "Esprit 2": {inf: [120, 49.276871, -123.117599, "7325 Arcola St"]},
          "High Gate Ridge": {inf: [163, 49.219330, -122.964592, "6708 Arcola"]},
          "West": {inf: [121, 49.219532, -122.957695, "7088 Salisbury St"]}
        }
      }
    }
  },
  "New Westminster": {
    inf: ["New Westminster"],
    regions: {
      "New Westminster": {
        inf: [21, 49.210308, -122.920273, 14],
        buildings: {
          "Azure I": {inf: [145, 49.200329, -122.915596, "800 Block Carnarvon St"]},
          "Azure II": {inf: [146, 49.200329, -122.914864, "800 Block Carnarvon St"]},
          "Azure III (Marinus)": {inf: [147, 49.200356, -122.914307, "800 Block Carnarvon St"]},
          "Inter Urban": {inf: [127, 49.200916, -122.912804, "New West Quay"]},
          "Q": {inf: [138, 49.199818, -122.924675, "1 Renaissance Square"]},
          "Quantum": {inf: [144, 49.204056, -122.908470, "39 6th St"]}
        }
      }
    }
  },
  "Surrey": {
    inf: ["Surrey"],
    regions: {
      "Central Surrey": {
        inf: [25, 49.200439, -122.848434, 13],
        buildings: {
          "Aura Two": {inf: [98, 49.197121, -122.836937, "10707-139 street"]}
        }
      }
    }
  }
};

// syntax coloring fix //    <script>

// set map variables
var init_lat = 49.27687;
var init_long = -123.117599;
var init_zoom = 13;

var zoom_city = 11;
var zoom_region = 13;
var zoom_street = 15;
var buildingOverlayMinZoom = 12;
var buildingOverlayMaxZoom = zoom_street;
var regionOverlayMaxZoom = 14;

var van_lat = 49.261;
var van_long = -123.074;

// ground overlay status
var regionOverlay = false;

// setUnitType sets the label of the apartment number field to either "Apparment Number" or
// "Address" depending on the checked state of the "unit_type" element
function setUnitType() {

	var unit_type_label = document.getElementById('unit_type_label');
	var unit_type_townhouse = document.getElementById('unit_type_townhouse');

	if( !unit_type_label || !unit_type_townhouse ) return;
	
	if( unit_type_townhouse.checked == true )
		unit_type_label.innerHTML = "Address";
	else
		unit_type_label.innerHTML = "Apartment Number";

} // function unit_type

// selectCity and selectRegion are called when a new city or region is selected in the search form.
// they clear the drop downs below the selection chain and repopulate the child drop downs with
// values from the locations variable.
function selectCity() {

	// get search form select elements
	var select_city = document.getElementById('city');
	var select_building = document.getElementById('building_id');
	var select_region = document.getElementById('region_id');

	// if the elements do not exist;  return
	if( !(select_city && select_region && select_building) ) return;
	
	// cache common references
	var _Option = Option;
	var _buildingOptions = select_building.options;
	var _regionOptions = select_region.options;

	// get the name of the selected city
	var city = select_city.value;

	// disable and clear the building element
	select_building.style.color = '#999999';
	if( _buildingOptions != undefined ) _buildingOptions.length = 0;
	_buildingOptions[0] = new _Option('All buildings', '', false, false);
	select_building.disabled = true;

	// clear the region options
	if( _regionOptions ) _regionOptions.length = 0;
	_regionOptions[0] = new _Option('All regions', '', false, false);		
	
	// if data for the city does not exist
	if( window.locations[city] == undefined ) {
		// disable the region element
		select_region.style.color = '#999999';
		select_region.disabled = true;
	} else {
		// populate the region element with options for the current city
		updateOptions(select_region, window.locations[city].regions);
		select_region.style.color = '#FFFFFF';
	}

} // function

function selectRegion() {

	// get search form select elements
	var select_city = document.getElementById('city');
	var select_building = document.getElementById('building_id');
	var select_region = document.getElementById('region_id');

	// if the elements do not exist;  return
	if( !(select_city && select_region && select_building) ) return;

	// cache common references
	var _buildingOptions = select_building.options;
	var _regionOptions = select_region.options;

	// get the name of the current region
	var regionIndex = _regionOptions.selectedIndex;
	var region = _regionOptions[regionIndex].text;

	// clear the building element
	if(_buildingOptions.length) _buildingOptions.length = 0;
	_buildingOptions[0] = new Option('All buildings', '', false, false);

	// if data for the current region does not exist 
	if( (window.locations[select_city.value] == undefined) ||
			(window.locations[select_city.value].regions[region] == undefined) ) {
		// disable the building element
		select_building.disabled = true;
		select_building.style.color = '#999999';
	} else {
		// populate the building element with options for the current region
		updateOptions(select_building, window.locations[select_city.value].regions[region].buildings);
		select_building.style.color = '#FFFFFF';
	}

} // function

// updateOptions()
function updateOptions(element, optionList) {
	element.disabled = false;
	var _elementOptions = element.options;
	var _Option = Option;
	for( var tmp in optionList ) {
		var nextElement = _elementOptions.length;
		_elementOptions[nextElement] = new _Option(tmp, optionList[tmp].inf[0], false, false);
	}
} //function

// searchStore stores the search form values in a cookie and it called when the search button is clicked.
function searchStore() {

	// get the elements to be stored
	var select_city = document.getElementById('city');
	var select_region = document.getElementById('region_id');
	var select_building = document.getElementById('building_id');
	var map_lat = document.getElementById('map_lat');
	var map_long = document.getElementById('map_long');
	var map_zoom = document.getElementById('map_zoom');
	var price_min = document.getElementById('price_min');
	var price_max = document.getElementById('price_max');
	
	// assemble the element values into a string using defalts of "0" if needed
	var previousSearchCookie = (select_city) ? select_city.options.selectedIndex + "," : "0,";
	previousSearchCookie += (select_region) ? select_region.options.selectedIndex + "," : "0,";
	previousSearchCookie += (select_building) ? select_building.options.selectedIndex + "," : "0,";
	previousSearchCookie += (map_lat) ? map_lat.value + "," : "0,";
	previousSearchCookie += (map_long) ? map_long.value + "," : "0,";
	previousSearchCookie += (map_zoom) ? map_zoom.value + "," : "0,";
	previousSearchCookie += (price_min) ? price_min.selectedIndex + "," : "0,";
	previousSearchCookie += (price_max) ? price_min.selectedIndex + "," : "0,";
	
	// set a cookie containing the current search values separated by ","
	document.cookie = "previousSearch=" + previousSearchCookie;

} // function

// searchPersist restores the search form values when each page is loaded.
function searchPersist() {

	// get the cookie
	var queryString = document.cookie;

	// find "previousSearch=" in the cookie
	var qStart = queryString.indexOf('previousSearch=')

	// if previous search data was found in the cookie
	if(qStart > -1) {

		// set qStart to the data position
		qStart += 15;

		// set sStop to the end of data position
		var qStop = queryString.indexOf(';', qStart);

		// if the end was found;  use it;  else use the rest of the string
		if(qStop > qStart) {
			queryString = queryString.substring(qStart, qStop);
		} else {
			queryString = queryString.substring(qStart);
		}

		// parse the string into the values of the previous search
		var prevSelects = queryString.split(',');

		// get the search form elements
		var select_city = document.getElementById('city');
		var select_region = document.getElementById('region_id');
		var select_building = document.getElementById('building_id');
		var price_min = document.getElementById('price_min');
		var price_max = document.getElementById('price_max');
		
		// if the city element is not on the page;  return
		if( !select_city ) return;
	
		// restore the values and update the chained selects
		select_city.options.selectedIndex = prevSelects[0];
		selectCity();
		select_region.options.selectedIndex = prevSelects[1];
		selectRegion();
		select_building.options.selectedIndex = prevSelects[2];
		
		price_min.selectedIndex = prevSelects[6];
		price_max.selectedIndex = prevSelects[7];

	} // if previous search data was found in the cookie

} // function

// if the google maps api is loaded
if( typeof(GMap2) != 'undefined' ) {
	
	function gLoad() {
	
		if( GBrowserIsCompatible() ) {
	
			// if the map container does not exist;  return
			var map_container = document.getElementById("map");
			if( !map_container ) return;
			
			var marker = [];
			
			// getBuildingMarkers() returns an array of building markers for the current zoom level
			function getBuildingMarkers( currentZoom ) {
			
				// create an icon object for the current zoom
				var iconX = 24;
				var iconY = 29;
				switch(currentZoom) {
					case 15: var iconScale = 1;  break;
					case 14: var iconScale = 0.8;  break;
					case 13: var iconScale = 0.4;  break;
					case 12: var iconScale = 0.2;  break;
					case 11: var iconScale = 0.15;  break;
					default: var iconScale = 1;
				}
				var iconBuildingZ = new GIcon();
				iconBuildingZ.image = "images-google/icon-assignment.png";
				iconBuildingZ.iconSize = new GSize( iconX * iconScale , iconY * iconScale );
				iconBuildingZ.iconAnchor = new GPoint( Math.round(iconX * iconScale / 2 ), Math.round(iconY * iconScale * 0.9) );
				iconBuildingZ.infoWindowAnchor = new GPoint( Math.round(iconX * iconScale * 0.75), Math.round(iconX * iconScale * 0.2) );
				
				GMarker.prototype.info = new Object;
			
				// traverse the locations object
				marker.length = 0;
				var markerIndex = 0;
				var buildingInf = [];
				for( city in window.locations ) {
					for( region in window.locations[city].regions ) {
						for( building in window.locations[city].regions[region].buildings ) {
			
							// get the current building info
							buildingInf = window.locations[city].regions[region].buildings[building].inf;
			
							// if the building has co-ordinates set
							if( buildingInf[1] != 0 ) {
								markerIndex = marker.length;
								marker.push( new GMarker( new GLatLng( buildingInf[1], buildingInf[2] ), {
									icon:iconBuildingZ,
									title:building
								} ) );
								marker[markerIndex].info = { buildingId:buildingInf[0], mIndex:markerIndex, mBuilding:building, mCity:city, mRegion:region, iconImage:iconBuildingZ.image };
								GEvent.addListener( marker[markerIndex], 'click', function() {
									var _info = this.info;
									var buildingDetailsLink = '?page=details&amp;building=' + _info.buildingId;
									marker[_info.mIndex].openInfoWindowHtml(
										'<div class="infoWindow">' +
										'<img align="left" src="' + _info.iconImage + '" alt="" />' +
										'<span class="iw_title">' + _info.mBuilding + '</span><br />' +
										'<span class="iw_address">' + window.locations[_info.mCity].regions[_info.mRegion].buildings[_info.mBuilding].inf[3] + '</span>' +
										'<p><a href="' + buildingDetailsLink + '">View building details</a><br />' +
										'<a href="' + buildingDetailsLink + '&amp;tab=units">View units for sale</a><br />' +
										'<a href="' + buildingDetailsLink + '#request_details">Inquire about this building</a></p></div>'
									);
									searchStore();
								});
							} // if the building has co-ordinates set
			
						} // for each building
					} // for each region
				} // for each city					
				
				return marker;
				
			} // function
			
			// create ground overlay object
			var groundOverlay = new GGroundOverlay("images-google/zoom-region-1250px.png",
				new GLatLngBounds(new GLatLng(49.1065,-123.308), new GLatLng(49.3873,-122.878)) );

			// get initial map zoom and location from form values or use defaults
			var lat_input = document.getElementById('map_lat');
			var long_input = document.getElementById('map_long');
			var zoom_input = document.getElementById('map_zoom');
			window.lat_init = ( lat_input && (lat_input.value != 0) && !isNaN(lat_input.value) ) ? lat_input.value : init_lat;
			window.long_init = ( long_input && (long_input.value != 0) && !isNaN(long_input.value) ) ? long_input.value : init_long;
			window.zoom_init = ( zoom_input && (zoom_input.value != 0) && !isNaN(zoom_input.value) ) ? parseInt(zoom_input.value) : init_zoom;

			// create the map
			var map = new GMap2( map_container );
			map.disableDoubleClickZoom();
			map.enableContinuousZoom();

			// set the map to the init co-ordinates
			map.setCenter( new GLatLng(window.lat_init, window.long_init), window.zoom_init );
			
			// linkMapToSearch syncs the map to the currently selected building, region or city and adds event
			// handlers to sync the map if new buildings, regions, or cities are selected.
			function linkMapToSearch(map) {
			
				// get the search form select elements
				var select_city = document.getElementById('city');
				var select_region = document.getElementById('region_id');
				var select_building = document.getElementById('building_id');
			
				// if city, region, and building form elements do not exist;  return
				if( !(select_city && select_region && select_building) ) return;
				
				function syncMapToCity() {
					var select_city = document.getElementById('city');
					var lat, long;
				
					// set the location of the selected city
					switch( select_city.value ) {
						case "Richmond":
							lat = 49.16049142346117;  long = -123.14094543457031;
							break;
						case "North Vancouver":
							lat = 49.31863234729242;  long = -123.07863235473633;
							break;
						case "West Vancouver":
							lat = 49.337763151105854;  long = -123.1702995300293;
							break;
						case "Burnaby":
							lat = 49.25592972045248;  long = -122.97426223754883;
							break;
						case "New Westminster":
							lat = 49.21344822594888;  long = -122.92224884033203;
							break;
						case "Surrey":
							lat = 49.17811258315209;  long = -122.85667419433594;
							break;
						default:
							lat = 49.27575684838932;  long = -123.13133239746094;
					} // switch city
				
					if( map.getZoom() != zoom_city )
						map.setZoom(zoom_city);
					map.panTo(new GLatLng(lat ,long) );
				}	
				GEvent.addDomListener(select_city, 'change', syncMapToCity);
				GEvent.addDomListener(select_city, 'click', syncMapToCity);
				
				function syncMapToRegion() {
					var lat, long, zoom, inf, downtown;
					var select_city = document.getElementById('city');
					var select_region = document.getElementById('region_id');
					var region_index = select_region.selectedIndex;
					var region_name = select_region.options[region_index].text;
					// get the location and zoom
					if( region_index == 0 ) {
						return;
					} else {
						inf = window.locations[select_city.value].regions[region_name].inf;
						lat = inf[1];
						long = inf[2];
						zoom = inf[3];
					}
					// update the map
					if( zoom && (map.getZoom() != zoom) )
						map.setZoom(zoom);
					map.panTo(new GLatLng(lat, long) );
				}	// function
				GEvent.addDomListener(select_region, 'change', syncMapToRegion);
				GEvent.addDomListener(select_region, 'click', syncMapToRegion);
			
				function syncMapToBuilding() {
					var select_city = document.getElementById('city');
					var select_region = document.getElementById('region_id');
					var region_index = select_region.selectedIndex;
					var region_name = select_region.options[region_index].text;
					var select_building = document.getElementById('building_id');
					var building_index = select_building.selectedIndex;
					var building_name = select_building.options[building_index].text;
					var building_inf = window.locations[select_city.value].regions[region_name].buildings[building_name].inf;
					// if co-ordinate data exists for the region
					if( building_inf[1] ) {
						if( map.getZoom() != window.zoom_street )
							map.setZoom(window.zoom_street);
						map.panTo(new GLatLng(building_inf[1], building_inf[2]) );
					}
				}
				GEvent.addDomListener(select_building, 'change', syncMapToBuilding);
				GEvent.addDomListener(select_building, 'click', syncMapToBuilding);
			
			} // function

			// sync the map to the search form and add event handlers to keep it in sync
			linkMapToSearch(map);
			
			// if on the building edit page;  set up the geo coder
			if( digPage == 'building_edit' ) {

				// get the geo coder "Find" button and address elements
				var geo_button = document.getElementById('geo_button');
				var geo_address = document.getElementById('geo_address');
				var geo_address_input = document.getElementById('geo_address_input');
				
				// if the button and address elements exist
				if( geo_address && geo_button && geo_address_input ) {
				
					// add address update event handler
					geo_address_input.onkeyup = function() {
						if( geo_address.textContent )
							geo_address.textContent = geo_address_input.value;
						else
							geo_address.innerText = geo_address_input.value;
					}

					// add find button onclick event handler
					geo_button.onclick = function() {
						var address = geo_address.innerHTML + ' Vancouver BC Canada';
						var geocoder = new GClientGeocoder();
						geocoder.getLatLng(address,	function(point) {
							if (!point) {
								alert(address + " not found");
							} else {
								map.setCenter(point);
							}
						});
					}

				} // if the button and address elements exist

			} // if on the building edit page
			
			// else if on the home page
			else if( digPage == 'home' ) {
			
				// create marker manager objects
				var markerManager = new GMarkerManager( map , { borderPadding:30} );
				var buildingMarkers = [];
				var markerLevel = [];
					
			} // if on the home page
			
			// else if on the building details page
			else if( digPage == 'details' ) {
				var iconBuilding = new GIcon();
				iconBuilding.image = "images-google/icon-assignment.png";
				iconBuilding.iconSize = new GSize(24, 29);
				iconBuilding.iconAnchor = new GPoint(12, 26);
				map.addOverlay( new GMarker( map.getCenter(), iconBuilding, true ) );
			}

			// updateOverlays updates regional ground overlay and building markers
			function updateOverlays(map, oldLevel, newLevel) {
			
				// if region overlay is within range and is not currently added
				if( (newLevel <= window.regionOverlayMaxZoom) && (window.regionOverlay == false) ) {
					window.regionOverlay = true;
					map.addOverlay(groundOverlay);
				}
				// else if region overlay is out of range and is currently added
				else if( (newLevel > window.regionOverlayMaxZoom) && (window.regionOverlay === true) ) {
					window.regionOverlay = false;
					map.removeOverlay(groundOverlay);
				}
			
				// if on the home page
				if( (digPage == 'home') &&
						(newLevel >= window.zoom_city) &&
						(newLevel <= window.zoom_street) &&
						(markerLevel[newLevel] == undefined) ) {
				
					// get the building markers for this zoom level
					var buildingMarkers = getBuildingMarkers( newLevel );
					
					// set this level to prevent creating markers for it again
					markerLevel[newLevel] = true;
			
					// add the building markers to the marker manager and set them to only be visible at this zoom
					markerManager.addMarkers( buildingMarkers, newLevel, newLevel );
					
					// show the markers
					markerManager.refresh();
					
				} // if we're on the home page
			
			} // function
			
			// set map zoom event listner to update overlays when finished zooming
			GEvent.addListener(map, 'zoomend', function(oldLevel, newLevel) {
				updateOverlays(map, oldLevel, newLevel);
			});
			updateOverlays( map, 0, map.getZoom() );
			
			// Create TextualZoomControl
			// A TextualZoomControl is a GControl that displays textual "Zoom In"
			// and "Zoom Out" buttons (as opposed to the iconic buttons used in
			// Google Maps).
			
			function TextualZoomControl() {}
			TextualZoomControl.prototype = new GControl();
			
			// Creates a one DIV for each of the buttons and places them in a container
			// DIV which is returned as our control element. We add the control to
			// to the map container and return the element for the map class to
			// position properly.
			
			TextualZoomControl.prototype.initialize = function(map) {
			
				var container = document.createElement("div");
				
				if( digPage != 'region_edit' ) {
					var zoomStreetDiv = document.createElement("div");
					this.setButtonStyle_(zoomStreetDiv);
					container.appendChild(zoomStreetDiv);
					zoomStreetDiv.appendChild(document.createTextNode("Zoom Street"));
					GEvent.addDomListener(zoomStreetDiv, "click", function() {
						map.setZoom(15);
					});
				}
				
				if( digPage == 'region_edit' ) {
					var zoomRegionInDiv = document.createElement("div");
					this.setButtonStyle_(zoomRegionInDiv);
					container.appendChild(zoomRegionInDiv);
					zoomRegionInDiv.appendChild(document.createTextNode("Region +"));
					GEvent.addDomListener(zoomRegionInDiv, "click", function() {
						map.setZoom(14);
					});
				}

				var zoomRegionDiv = document.createElement("div");
				this.setButtonStyle_(zoomRegionDiv);
				container.appendChild(zoomRegionDiv);
				zoomRegionDiv.appendChild(document.createTextNode("Zoom Region"));
				GEvent.addDomListener(zoomRegionDiv, "click", function() {
					map.setZoom(13);
				});
				
				if( digPage == 'region_edit' ) {
					var zoomRegionOutDiv = document.createElement("div");
					this.setButtonStyle_(zoomRegionOutDiv);
					container.appendChild(zoomRegionOutDiv);
					zoomRegionOutDiv.appendChild(document.createTextNode("Region -"));
					GEvent.addDomListener(zoomRegionOutDiv, "click", function() {
						map.setZoom(12);
					});
				}

				if( digPage != 'region_edit' ) {
					var zoomCityDiv = document.createElement("div");
					this.setButtonStyle_(zoomCityDiv);
					container.appendChild(zoomCityDiv);
					zoomCityDiv.appendChild(document.createTextNode("Zoom City"));
					GEvent.addDomListener(zoomCityDiv, "click", function() {
						map.setZoom(11);
					});
				}
			
				map.getContainer().appendChild(container);
				return container;
			
			}
			
			// By default, the control will appear in the top left corner of the
			// map with 7 pixels of padding.
			TextualZoomControl.prototype.getDefaultPosition = function() {
				return new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(7, 7) );
			}
			
			// Sets the CSS for the given button element.
			TextualZoomControl.prototype.setButtonStyle_ = function(button) {
				var _buttonStyle = button.style;
				_buttonStyle.textDecoration = "underline";
				_buttonStyle.color = "#0000cc";
				_buttonStyle.backgroundColor = "white";
				_buttonStyle.font = "small Arial";
				_buttonStyle.border = "1px solid black";
				_buttonStyle.padding = "2px";
				_buttonStyle.marginBottom = "3px";
				_buttonStyle.textAlign = "center";
				_buttonStyle.width = "6em";
				_buttonStyle.cursor = "pointer";
			}

			// add map controls
			if( digPage == 'home' || digPage == 'region_edit' )
				map.addControl( new TextualZoomControl() ); //Custom Zoom Buttons
			//map.addControl(new GLargeMapControl());
			
			// if map input fields exist;  sync them to the map and add an event hander to keep them in sync
			if( zoom_input && lat_input && long_input ) {

				function updateMapInputs() {
					var center = map.getCenter();
					var zoom = map.getZoom();
					lat_input.value = center.lat();
					long_input.value = center.lng();
					zoom_input.value = zoom;
					// if on the building edit page
					if( (digPage == 'building_edit') ) {
						// show a building icon in the center of the map
						map.clearOverlays();
						map.addOverlay( new GMarker( center, G_DEFAULT_ICON, true ) );
					}
				}
				GEvent.addListener(map, "move", updateMapInputs);
				updateMapInputs();

			} // if map input fields exist

		} // if gBrowserIsCompatable

	} // function gLoad

} // if google maps api is loaded

// update the unit edit page to reflect the unit type
addLoadEvent( setUnitType );

// restore the previous search form values
addLoadEvent( searchPersist );

// load the google map
if( typeof GUnload != 'undefined' ) {
	addLoadEvent( gLoad );
	window.onunload = GUnload;
}

// addLoadEvent written by Simon Willison simonwillison.net
function addLoadEvent(func) {
  var oldonload = window.onload;
  if( typeof oldonload != 'function' ) {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
} // function addLoadEvent