function showPic(sUrl){
var e = event || window.event;
var x = mouseX(e);
var y = mouseY(e);
 //var x,y; 
 //x = event.clientX; 
 //y = event.clientY; 
 document.getElementById("Layer1").style.left = x; 
 document.getElementById("Layer1").style.top = y; 
 document.getElementById("Layer1").innerHTML = "<img src=" + sUrl + "\">"; 
 document.getElementById("Layer1").style.display = "block"; 
}
function hiddenPic(){
 document.getElementById("Layer1").innerHTML = ""; 
 document.getElementById("Layer1").style.display = "none"; 
}

function mouseX(evt) {
if (evt.pageX) return evt.pageX;
else if (evt.clientX)
   return evt.clientX + (document.documentElement.scrollLeft ?
   document.documentElement.scrollLeft :
   document.body.scrollLeft);
else return null;
}

function mouseY(evt) {
if (evt.pageY) return evt.pageY;
else if (evt.clientY)
   return evt.clientY + (document.documentElement.scrollTop ?
   document.documentElement.scrollTop :
   document.body.scrollTop);
else return null;
}