实现广告在右边浮动

	 

	lastScrollY = 0; 

	        function heartBeat() { 

	            diffY = document.body.scrollTop; 

	            percent = .1 * (diffY - lastScrollY); 

	            if (percent > 0) percent = Math.ceil(percent); 

	            else percent = Math.floor(percent); 

	//right是浮动层的id 

	            document.all.right.style.pixelTop += percent; 

	            lastScrollY = lastScrollY + percent; 

	        } 

	     

	        window.setInterval("heartBeat()", 1);   

补充：web前端 , JavaScript ,

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