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


function toggle(DOMid){
	if (document.getElementById(DOMid) != null){
		dObj = document.getElementById(DOMid);
		if (dObj.style.display == 'none' || dObj.style.display == ''){
			dObj.style.display = 'block';
		}else{
			dObj.style.display = 'none';
		}
	}
}

function getNode(DOMid){
	return document.getElementById(DOMid);
}