function GoogleMap(pos_1_LatLng, pos_2_LatLng, window_html) {

	if (GBrowserIsCompatible()) {
		var map = new GMap2(document.getElementById("map_canvas"));
		map.setCenter(new GLatLng(pos_1_LatLng[0], pos_1_LatLng[1]), 10);
		map.addControl(new GSmallZoomControl());
		
		var baseIcon = new GIcon();
		baseIcon.shadow = "http://www.google.com/mapfiles/shadow50.png";
		baseIcon.iconSize = new GSize(20, 34);
		baseIcon.shadowSize = new GSize(37, 34);
		baseIcon.iconAnchor = new GPoint(10, 34);
		baseIcon.infoWindowAnchor = new GPoint(10, 34);
		
		function createMarker(point) {
			
			var myIcon = new GIcon(baseIcon);
			myIcon.image = "http://www.google.com/mapfiles/marker.png";
			
			markerOptions = { icon:myIcon };
			var marker = new GMarker(point, markerOptions);
			
			GEvent.addListener(marker, "click", function() {
				clearTimeout(timer);
				marker.openInfoWindowHtml(window_html);
				var timer = setTimeout(function () {
					//add any scrolling etc. here
					map.panTo(new GLatLng(pos_2_LatLng[0], pos_2_LatLng[1]));
				}, 500);
			});
			
			return marker;
		}
		var latlng = new GLatLng(pos_1_LatLng[0], pos_1_LatLng[1]);
		map.addOverlay(createMarker(latlng));
	}
}

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function addUnLoadEvent(func) {
	var oldonunload = window.onunload;
	if (typeof window.onunload != 'function') {
		window.onunload = func;
	} else {
		window.onunload = function() {
			oldonunload();
			func();
		}
	}
}

//addUnLoadEvent(GUnload);