if (typeof OV == "undefined" || !OV) {
    var OV = {};
}
OV.tabs = {}
OV.tabs.hoverover = function (e, tab) {
	image = YAHOO.util.Dom.get(tab);
	OV.tabs.current = image.src;
	image.src = "/lib/img/" + tab + "_over.gif";
}
OV.tabs.hoverout = function (e, tab) {
	img = YAHOO.util.Dom.get(tab);
	img.src = OV.tabs.current;
	OV.tabs.current = null;
}