function show_loading() { 
  IE = (document.all && navigator.userAgent.indexOf("Opera") == -1)
  
  if (IE) {
    document.getElementById("loading").style.display = "inline";
    document.getElementById("loading").offsetHeight;
    document.getElementById("loading").style.pixelTop = (document.body.clientHeight/2)-(document.getElementById("loading").offsetHeight/2)+(document.body.scrollTop); 
    document.getElementById("loading").style.pixelLeft = (document.body.clientWidth/2)-(document.getElementById("loading").offsetWidth/2)+(document.body.scrollLeft); 
  }
}