var wsc = null;

function fetch(fld)
{
  if( wsc )
  {
    document.body.removeChild( wsc );
  }

  wsc = document.createElement( "SCRIPT" );
  wsc.type = "text/javascript";
  var id = fld.id;
  wsc.src = id + ".php?id=" + id;
  // fld.innerHTML = wsc.src;
  document.body.appendChild( wsc );
}