window.onloadListeners = new Array();
window.addOnLoadListener = function(listener){
	window.onloadListeners[window.onloadListeners.length] = listener;
}

window.onload = function(){
	for(var i=0;i<window.onloadListeners.length;i++){
		var func = window.onloadListeners[i];
		func.call();
	}
}