function displayCenterWindow(url, nazwa, Jwidth, Jheight) {
	var Win = window.open(url, nazwa, 'toolbar=no,menubar=no,scrollbars=no,resizable=no,height='+Jheight+',width='+Jwidth+',left=' + ((screen.width/2) - (Jwidth/2)) + ',top=' + ((screen.height/2) - (Jheight/2)));
	Win.focus();
}

function displayScrollCenterWindow(url, nazwa, Jwidth, Jheight) {
	var Win = window.open(url, nazwa, 'toolbar=no,menubar=no,scrollbars=yes,resizable=no,height='+Jheight+',width='+Jwidth+',left=' + ((screen.width/2) - (Jwidth/2)) + ',top=' + ((screen.height/2) - (Jheight/2)));
	Win.focus();
}

function displayWindow(url, nazwa, Jwidth, Jheight) {
	var Win = window.open(url, nazwa, 'toolbar=no,menubar=no,scrollbars=no,resizable=no,height='+Jheight+',width='+Jwidth+',left=0,top=0');
	Win.focus();
}

function flash(id, kolor, czas, kolor2, czas2)
{
  if (document.getElementById)
  {
    document.getElementById(id).style.color = kolor;
    setTimeout('flash("' +  id + '","' + kolor2 + '",' + czas2 + ',"' + kolor + '",' + czas + ')', czas);
  }
  else if (document.all)
  {
    document.all[id].style.color = kolor;
    setTimeout('flash("' +  id + '","' + kolor2 + '",' + czas2 + ',"' + kolor + '",' + czas + ')', czas);
  }
}