Imitate click

 function initMouseEventDM()
{
  var eo=document.getElementById("objid");
  if( window.outerWidth == undefined )
  {
    eo.fireEvent("onclick");
  }
  else
  {
    var vo = document.createEvent("MouseEvent");
    vo.initMouseEvent("click", true, true, window, 0, 0, 0, 11, 22, true, false,

false, false, 0, null);
    eo.dispatchEvent( vo );
  }
}