window.showTip = function(element, content){
	new Tip(element, 
			new Element('div').update(content),
			{
			  style: 'default',
			  stem: 'bottomMiddle',
			  width: '250px',
			  hook: { tip: 'bottomMiddle', mouse: true },
			  offset: { x: 0, y: -5 }
			});
};