document.write("<div id='tip' align='left' style='position:absolute; width:140px;  z-index:1;  background-color: #ffffff; border: 1px solid gray; overflow: visible;visibility: hidden;font-size:12px;padding:12px;color:#333333'></div>")

function showtip(w){
	if(navigator.appName=="Netscape") return false;
	var x=event.x;
	var y=event.y;
	tip.innerHTML=w;
	tip.style.visibility="visible";
	tip.style.left=x+10;
	tip.style.pixelTop=y+document.documentElement.scrollTop+10;
}

function hidetip(){
    document.getElementById("tip").innerHTML=""
    document.getElementById("tip").style.visibility="hidden";
}