google.load("jquery", "1.3.2");

google.setOnLoadCallback(function() {
	$(document).ready( function(){
	  initCorners();
	});
});

function fold(what) {
	obj=document.getElementById(what);
	if (obj) {
		if (obj.className=="fold") {
			obj.className="unfold";
		} else {
			obj.className="fold";
		}
	}
}

function initCorners()
{
	//addCornersToBoxes();
	addCornersToElements("#nav");
}

function addCornersToElements(what)
{
	var elements = $(what);
	for (var i=0; i<elements.length; i++)
	{
		var obj = elements[i];
		obj.style.position = "relative";
		makeCorners(obj);	
	}
}

function makeCorners(obj)
{
	var classNames = ["tl", "tr", "bl", "br"];
	for (var j=0; j<=3; j++)
	{
		var cnr = document.createElement("span");
		cnr.className = "cnr " + classNames[j];		
		obj.appendChild(cnr);
	}
}