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

function initCorners()
{
	//addCornersToBoxes();
	addCornersToElements(".box");
	addCornersToElements("ul.topCorners li");
	addCornersToElements("ul.menu li");
	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);
	}
}