var nWin = null;

function ue_popup(_location,_top,_left,_width,_height)
{
	if (nWin != null)
	{
		nWin.close();
	}
		
	_top = (screen.height - _height) / 2 ;
	_left = (screen.width - _width ) / 2;
		


		
	var ls_set = "scrollbars=yes, status=yes, top=" + _top + ",left=" + _left + ",width=" + _width + ",height=" + _height;
	nWin = open( _location, "", ls_set ) ;	
	nWin.focus();
}

function ue_close()
{
	window.close() ; 
}