//
	// Fonction d'ouverture fen?tre d'impression planning ....
	//
	function open_popup (a_dest, a_width, a_height, a_left, a_top, a_features)
	{
		var featur = "";
	
		if (a_features) 		featur+=a_features;
		else 				featur+='toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=no'
	
	        featur+= ',width='+a_width+',height='+a_height;
			if (a_left)	 featur+= ', left='+a_left;
			if (a_top)	 featur+= ', top='+a_top;
	        zoom = window.open (a_dest, 'popup', featur );
	}