function hoverAnchors (td) {
	var nodes = td.childNodes;
	for (var i = 0; i < nodes.length; i++) {
		if (nodes[i].nodeName == 'A') {
			nodes[i].onmouseover=function() {
				this.className+=" over";
			}
			nodes[i].onmouseout=function() {
				this.className=this.className.replace(" over", "");
			}
		}
	}
}

function hoverTRAnchors (tr) {
	var nodes = tr.childNodes;
	for (var i = 0; i < nodes.length; i++) {
		if (nodes[i].nodeName == 'TD') {
			hoverAnchors(nodes[i]);
		}
	}
}

var windowLoad = function () {
	var ids = Array('mid_nav', 'top_nav', 'bot_more');
	for (var i = 0; i < ids.length; i++) {
		var node = document.getElementById(ids[i]);
		if (node) {
			if (node.nodeName == 'TR') {
				hoverTRAnchors(node);
			} else if (node.nodeName == 'TD') {
				hoverAnchors(node);
			}
		}
	}
}

window.onload = windowLoad;