var map;

var arrow = new GIcon();
arrow.image = "http://www.google.com/mapfiles/arrow.png";
arrow.shadow = "http://www.google.com/intl/en_us/mapfiles/arrowshadow.png";
arrow.iconSize = new GSize(39, 34);
arrow.shadowSize = new GSize(37, 34);
arrow.iconAnchor = new GPoint(10, 34);



function placeArrowAtPoint(point)
{
	var arrowmarker = new GMarker(point,arrow);
	map.addOverlay(arrowmarker);
}

function mapLoad(glat, glng) {
	if (GBrowserIsCompatible()) {
		map = new GMap2(document.getElementById("map"));
		
		
		map.addControl(new GSmallMapControl());
		map.addControl(new GMapTypeControl());
		
		//map.addControl(new GMapTypeControl());
		map.setCenter(new GLatLng(glat,glng), 15, G_NORMAL_MAP);
		
		var arrowmarker = new GMarker(new GLatLng(glat,glng),arrow);
		map.addOverlay(arrowmarker);
		
	}
}

function getLatLng(){

        if (!document.getElementsByTagName) return false;
        if (!document.getElementById) return false;
        if (!document.getElementById("glng")) return false;

		var glat = document.getElementById("glat");
      	var glng = document.getElementById("glng");
		
        mapLoad(glat.firstChild.nodeValue, glng.firstChild.nodeValue);

}

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();
	  }
	}
}

addLoadEvent(getLatLng);
addUnLoadEvent(GUnload);