var showHelp = function() {
	//alert(YAHOO.util.Dom.get(this.id).offsetLeft+", y="+YAHOO.util.Dom.get(this.id).offsetTop);
	YAHOO.util.Dom.get(this.id+"Div").style.display="block";
	var xPos=YAHOO.util.Dom.get(this.id).offsetLeft - YAHOO.util.Dom.get(this.id+"Div").offsetWidth/2 + 10;
	var yPos=0 - YAHOO.util.Dom.get(this.id+"Div").offsetHeight-5;
	//alert(YAHOO.util.Dom.get(this.id).offsetTop +"-"+ YAHOO.util.Dom.get(this.id+"Div").offsetHeight);
	YAHOO.util.Dom.get(this.id+"Div").style.left= xPos+"px";
	YAHOO.util.Dom.get(this.id+"Div").style.top= yPos+"px";
}
var hideHelp = function() {
	YAHOO.util.Dom.get(this.id+"Div").style.display="none";
}
var initHelp = function(){
	helpArray = YAHOO.util.Dom.getElementsByClassName('help');
	for(i=0;i<helpArray.length;i++){
		YAHOO.util.Event.addListener( helpArray[i], "mouseover", showHelp );
		YAHOO.util.Event.addListener( helpArray[i], "mouseout", hideHelp );
	}
}
YAHOO.util.Event.onDOMReady(initHelp);