div.upload_popup
{
  z-index: 1000;
  width: 300px;
  height: 150px;
  border: 4px solid black;
  background-color: white;

  margin-left: auto;
  margin-right: auto;

}

#page_screen
{
   z-index: 500;
   background-color:#000000;
   filter:alpha(opacity=80);
   opacity: 0.8;
   position:absolute;
   top:0px;
   left:0px;
   width:100%;
   display:none;
   visibility:hidden;
}