function setTip (element,tip_txt)
	{	
		element.id = element.name;
		block = document.getElementById(element.id);
		var left = 0;    var top = 0;
		while (block)    
			{
				left += block.offsetLeft;        
				top += block.offsetTop;        
				block = block.offsetParent;    
			}  			
		tip_div = document.getElementById("tip");
		tip_div.style.display = "block";
		tip_div.style.top = (top+element.clientHeight)+"px";
		tip_div.style.left = left+"px";
		tip_div.style.width = (element.offsetWidth-6)+"px";
		tip_div.style.height = "auto";
		tip_div.innerHTML = tip_txt;
	}
function remTip ()
	{	
			
		tip_div = document.getElementById("tip");
		tip_div.style.display = "none";
	}