lastScrollY=0;
	function heartBeat()
	{ 
		var diffY;
		if (document.documentElement && document.documentElement.scrollTop)
			diffY = document.documentElement.scrollTop;
		else if (document.body)
			diffY = document.body.scrollTop

		percent=.1*(diffY-lastScrollY); 
		if(percent>0)
			percent=Math.ceil(percent); 
		else
			percent=Math.floor(percent); 
		document.getElementById('leftad1').style.top=parseInt(document.getElementById('leftad1').style.top)+percent+'px';
		document.getElementById('rightad1').style.top=parseInt(document.getElementById('leftad1').style.top)+percent+'px';
		lastScrollY=lastScrollY+percent; 
	}
	document.write('<style type=\'text/css\'>#leftad1,#rightad1{width:110px;height:370px;overflow:hidden;}</style>');
	document.write('<DIV id=leftad1 style=\'left:2px;POSITION:absolute;TOP:120px;\'>');document.write('<a href=http://www.bcstainless.com/ target=_blank><img src=http://www.ylrqw.com/uploadfile/ads/801281087415.jpg border=0></a>');document.write('</div><DIV id=rightad1 style=\'right:2px;POSITION:absolute;TOP:120px;\'>');document.write('<a href=http://www.bcstainless.com/ target=_blank><img src=http://www.ylrqw.com/uploadfile/ads/811281087510.jpg border=0></a>');document.write('</div>');
	window.setInterval('heartBeat()',1);