__onloadStack.push(function() {
	var ul = $('sitenav');
	var as = ul.getElementsByTagName('a');
	var asize = as.length;
	for(i=0; i<asize; i++) {
		as[i].onmouseover = setMenuText;
		as[i].onmouseout = setMenuTextNode;
	}
});
function setMenuText(e) {
	if (!e) var e = window.event;
	var img = (e.srcElement) ? e.srcElement : e.target;
	while(img.nodeName != 'img' && img.firstChild) {
		img = img.firstChild;
	}
	if (img.alt) {
		setMenuTextNode(img.alt);
	}
}
function setMenuTextNode(txt) {
	if (typeof(txt) != 'string') { txt = ''; }
	span = $('sitenav').getElementsByTagName('li')[0].getElementsByTagName('span')[0];
	
	/* we toggle visibility because an empty textnode would hide the whole li */
	if (txt.length == 0) {
		span.style.visibility = 'hidden';
	} else {
		span.style.visibility = 'visible';
		span.firstChild.nodeValue = txt;
	}
}