function openPopUp(file, breed, hoog)
{
	var  PopUp = "" ;
	var  x = screen.width ;
	var  y = screen.height ;
	var  width = breed;
	var  height = hoog;
	var	 top = parseInt( ( y - height ) / 2 ) ;
	var	 left = parseInt( ( x - width  ) / 2 ) ;
	var  props = "toolbars=no,status=no,scrollbars=no,resizable=yes,width=" + width + ",height=" + height + ",left=" + left + ",top=" + top;
	
	var PopUp = window.open('popup.php?file='+file ,'PopUp' , props ) ;
}