var tempX, tempY;
 if (!document.all)
 document.captureEvents(Event.MOUSEDOWN);
 document.onmousedown = mouseDown;

 function mouseDown (evt) {
 if (document.all) {
 tempX = (event.clientX+1);
 tempY = (event.clientY+20);
 }
 else {
 tempX= (evt.pageX+1)+"px";
 tempY = (evt.pageY+20)+"px";
 }
 }
 function showDiv(){
 document.getElementById('content_popup').style.display='';
 document.getElementById('content_popup').style.left =tempX;
 document.getElementById('content_popup').style.top = tempY;
 }
 function hideDiv(){
 document.getElementById('content_popup').style.display='none';
 }