Event.observe(window, 'load', function()
	{
	$$('body')[0].innerHTML+='<div id="messageBox" style="display:none;width:250px;position:absolute;text-align:left"><div id="messageText" style="padding:8px;color:white;;background:#0585bb"></div><h5 style="padding-left:8px;font-size:1px;margin:0"><img src="http://credit.diandai.com/images/triangle.gif" alt="" /></h5></div>';
		$$('.showfloat').each(function(item)
			{
				item.observe('mouseover', function()
					{
						var dd_content=this.readAttribute('content');
						$('messageText').innerHTML=dd_content;
						var height=$('messageBox').getHeight();
						Element.clonePosition($('messageBox'), this, {setWidth:false, setHeight:false, offsetTop:-height});									
						new Effect.Appear($('messageBox'), {duration:0.3, transition:Effect.Transitions.sinoidal});									
					}
				);
				item.observe('mouseout', function()
					{
						new Effect.Fade($('messageBox'), {duration:0});
					}
				);
			}
		);
	}
);