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

function insertAfter(newElement, targetElement){
	var parent = targetElement.parentNode;
	if(parent.lastChild == targetElement){
		parent.appendChild(newElement);
	}else{
		parent.insertBefore(newElement, targetElement.nextSibling);
	}
}