// JavaScript Document
var myTWin = window.myTWin;
    
    function OpenMyWin(link,winName)
    {
      var retValue=true;

vyska = screen.height;
sirka = screen.width;
var levy = (sirka - 430)/2;
var horni = (vyska - 430)/2

      if (myTWin!=null && !myTWin.closed)
      {
        myTWin.focus();
        myTWin.location.href=link.href;
      }
      else
      {
        myTWin=window.open(link.href,winName, 'toolbar=no, menubar=no, location=no, directories=no, scrollbars=no, resizable=no, status=no, width=400px, height=300px, left=' + levy + ',top=' + horni  );
        if (myTWin==null || typeof(myTWin)=="undefined")
          retValue=false;
        else
        {
          link.target=winName;
          myTWin.focus();
        }
      }
      return retValue;
    }