function closePopUp()
{
  if(PopUpWindow && PopUpWindow.close) PopUpWindow.close();
}

function PopUp(nrBudynku,foto) 
{
	var popW = 700;
	var popH = 725;
	var popL = eval((screen.Width-popW)/2);
	var popT = eval((screen.Height-popH)/2);
    
    closePopUp();
    
    params = "width=" + popW
	+ ",height="	+ popH 
	+ ",toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no" + ",resizable=no,"
	+ "left=" + popL 
	+ ",top=" + popT;

	PopUpWindow = window.open('planokno.php?nr='+nrBudynku+'&foto='+foto, 'PopUpWindow', params);
}