// creates onload event handler
window.onload = function () { if ( load ) { load(); } }

// creates onunload event handler
window.onunload = function () {	if ( GUnload ) { GUnload(); } }	

// global vars
var map;
var markerbatch = [];
var bounds = new GLatLngBounds();

// instanciates the map
function load() {
	if(GBrowserIsCompatible()) {
		
		// Common map configuration
		map = new GMap2(document.getElementById("map"));
		setTimeout('GSliderControl.imgPreLoader(initGSlider)',500);
		map.addMapType(G_PHYSICAL_MAP);
		map.addControl(new GHierarchicalMapTypeControl());
		//map.addControl(new GOverviewMapControl(new GSize(140,100))); 
		map.addControl(new GScaleControl());
		map.setCenter(new GLatLng(42.636541,-77.088907), 9);
		map.setMapType(G_PHYSICAL_MAP);
	
		// Adds the offices to the map
		window.setTimeout(loadOffices, 0);
		
    	// restricts the range of zoom levels
   		var mt = map.getMapTypes();
   		for (var i=0; i<mt.length; i++)
    		mt[i].getMinimumResolution = function() {return 8;}
	
		// Load all markers
		loadProperties();

	}
	else
		document.getElementById("map").innerHTML = "<div style=\"font-weight:bold;text-align:center;margin-top:50px;\">Your browser does not support interactive maps</div>";
}

// centers and zooms the map so that all markers are displayed
function centerAndZoomOnBounds(bounds) {
	var SW = bounds.getSouthWest();
	var NE = bounds.getNorthEast();
	var newSW = new GLatLng(SW.lat() - 0.005, SW.lng() - 0.005);
	var newNE = new GLatLng(NE.lat() + 0.005, NE.lng() + 0.005);
	bounds.extend(newSW);
	bounds.extend(newNE);
	var center = bounds.getCenter();
	var newZoom = map.getBoundsZoomLevel(bounds);
	if(newZoom > 15) { newZoom = 15; }
	if (map.getZoom() != newZoom) { map.setCenter(center, newZoom); } else { map.panTo(center); }
}