function showLoader(objname,formname) {

  var loader = document.getElementById(objname);  
  var frm = document.getElementsByName(formname); 
  var ht = document.getElementsByTagName('html');
  var bdy = document.getElementsByTagName('body');

  var IpopTop = (document.body.clientHeight - 140) / 2;
  var IpopLeft = (document.body.clientWidth - 300) / 2;

          
  if(document.layers) {

    loader.style.top = IpopTop + document.body.scrollTop;
    loader.style.left = IpopLeft + document.body.scrollLeft;

  }else{

    loader.style.top = (IpopTop + document.body.scrollTop) + "px";
    loader.style.left = (IpopLeft + document.body.scrollLeft) + "px";

  }
  
  ht[0].style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
  bdy[0].style.opacity = 0.4;

  loader.style.visibility = "visible";
  
  frm[0].submit();
  
}