document.onmouseover = document.onmouseout = function(e){
	e = e || window.event;
	var
		srcEl = e.srcElement || e.target,
		title = document.getElementById("hoverTitle")
	;
	if(srcEl.tagName == "IMG" && title.parentNode == srcEl.parentNode.parentNode){
		if(!srcEl.titleMem){
			srcEl.titleMem = srcEl.titleMem || srcEl.getAttribute("title");
			srcEl.setAttribute("title", "");
		}
		while (title.hasChildNodes()) {
			title.removeChild(title.lastChild);
		}
		if(e.type == "mouseover") {
			title.appendChild(title.ownerDocument.createTextNode(srcEl.titleMem));
		}
	}
}