function foto(foto,sirka,vyska)
        {
    iMyWidth = (window.screen.width/2) - (sirka /2);
iMyHeight = (window.screen.height/2) - (vyska /2) ;   	
        	
        	
    var win =      window.open("/fotka/"+foto+"/","foto"+foto+"","left="+iMyWidth+",top="+iMyHeight+",width="+sirka+",height="+vyska+",menubar=no,directories=no,"+
  "toolbar=no,location=no,status=no,scrollbars=no,resizable=yes");

 if(win) return false;
 else return true;
        }
        
        
    var myTWin = window.myTWin;
    
    function OpenMyWin(link,winName)
    {
      var retValue=true;
      if (myTWin!=null && !myTWin.closed)
      {
        myTWin.focus();
        myTWin.location.href=link.href;
      }
      else
      {
        myTWin=window.open(link.href,winName);
        if (myTWin==null || typeof(myTWin)=="undefined")
          retValue=false;
        else
        {
          link.target=winName;
          myTWin.focus();
        }
      }
      return retValue;
    }