for(var elementID in tooltips) {
    YAHOO.util.Event.onContentReady(elementID, function(){
        var tooltipText = tooltips[this.id];
        var yuiTooltip = new YAHOO.widget.Tooltip(this.id+"_tooltip", {  
            context:this.id,  
            text:tooltipText, 
            showDelay:500,
            autodismissdelay:30000,
            effect:{effect:YAHOO.widget.ContainerEffect.FADE,duration:0.20}} ); 
    });
}