jQuery.noConflict();
jQuery(document).ready(function($){

$('#ulEssence img').tooltip({ 
    track: true, 
    delay: 0, 
    showURL: false, 
    showBody: " - ", 
    fade: 250,
	top: -30, 
    left: 30 
});
});
   
//a partir de la on peut Use Prototype with $(...), etc.
//$('someid').hide();