YAHOO.namespace("example.container");
var threadlist = function(el) {
	if(el.id) {
		return (el.id.indexOf("td_threadtitle_") >-1);
	}
	 else {
		return false;
	}
};
var tooltipTargets = YAHOO.util.Dom.getElementsBy(threadlist, "td", document.body);
YAHOO.example.container.tt = new YAHOO.widget.Tooltip("tt", { context: tooltipTargets } );