function openVenster(width,height,path){
			var openFotoX = (screen.width/2)- (width/2);
			var openFotoY = (screen.height/2)-(height/2) -50;
			var pos = "left="+openFotoX+",top="+openFotoY;
      		popup = window.open(path,"Fotovenster","width=" + width + ",height=" + height + ","+pos);
			if (popup == null || typeof(popup) == "undefined") alert ("De printopdracht werd geannuleerd door uw popup-blocker! Gelieve deze uit te schakelen.");
  		}