$(document).ready(function() {
    $("a#facebook").hover(onHoverOver, onHoverOut);
    $("a#twitter").hover(onHoverOver, onHoverOut);
    $("a#youtube").hover(onHoverOver, onHoverOut);
    
    function onHoverOver(eventObject) {
       $("#"+eventObject.currentTarget.id+"-title", eventObject.currentTarget.parentNode).show();
        
    }
    
    function onHoverOut(eventObject) {
       $("#"+eventObject.currentTarget.id+"-title", eventObject.currentTarget.parentNode).hide();
    }
});