var t_id = setInterval(animate,20);
var pos=0;
var dir=2;
var len=0;
function animate()
{
 var elem = document.getElementById('progress');
 if(elem != null) {
  if (pos==0) len += dir;
  if (len>196 || pos>200) pos += dir;
  if (pos>200) len -= dir;
  if (pos>200 && len==0) pos=0;
  elem.style.left = pos;
  elem.style.width = len;
 }
}
function remove_loading() {
 this.clearInterval(t_id);
 var targelem = document.getElementById('loader_container');
 targelem.style.display='none';
 targelem.style.visibility='hidden';
}