var w = 820;
var h = 600;
var x = 1024;//screen.width;
var y = 768;//screen.height;
var left = (x / 2) - (w / 2);
var top = (y / 2) - (h / 2);

left = left + 30;
top = top + 16;



function ImagePopUp(divname)
 {
    
    if (document.getElementById(divname).style.display = 'none')
    {
        document.getElementById(divname).style.position = 'absolute';
        document.getElementById(divname).style.top = top + 'px';
        document.getElementById(divname).style.left = left + 'px';
        document.getElementById(divname).style.display = 'block';
        //document.getElementById(divname).style.marginLeft = left/4 + 'px';
        //document.getElementById(divname).style.marginTop = (left * .1)  + 'px';
        //alert("Left" + left + "Top" + top + "x" + x + "y " + y);
        //window.status = getdivsize(divname);
    }
}

function ImagePopDown(divname)
{
    if (document.getElementById(divname).style.display = 'block')
     {
        document.getElementById(divname).style.display = 'none';
     }
}

  //document.getElementById(divname).style.top = top;   //(window.event.clientY - (y)) + 'px';
  //document.getElementById(divname).style.left = left; //(window.event.clientX - document.getElementById(divname).offsetWidth) + 'px';