function fireEvent(obj,evt){
	
	var fireOnThis = obj;
	if( document.createEvent ) {
	  var evObj = document.createEvent('MouseEvents');
	  evObj.initEvent( evt, true, false );
	  fireOnThis.dispatchEvent(evObj);
	} else if( document.createEventObject ) {
	  fireOnThis.fireEvent('on'+evt);
	}
}