boxHover = function() {
	var boxes = document.getElementById("content").getElementsByTagName("DIV");
	for (var i=0; i < boxes.length; i++) {
		boxes[i].onmouseover=function() {
			this.className+=" hovered";
		}
		boxes[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" hovered\\b"), "");
		}
	}
}

if (window.addEventListener) window.addEventListener("load", boxHover, false);
else if (window.attachEvent) window.attachEvent("onload", boxHover);