function ShowHide(elem, id)
{
  link = document.getElementById(elem);
  if(link != null)
  { 
  var url='images/frontend/arrow.gif';
  var url2='http://www.waoiu.pl/images/frontend/arrow.gif';
  var url3='http://waoiu.pl/images/frontend/arrow.gif';
  var s="";
  
  with(document.getElementById(elem))
  {
    with(childNodes[0]){
      s=getAttribute("src"); 
      //alert(s);
    }
  }
  
    //if(link.innerHTML == '<img src="images/frontend/arrow.gif" alt="rozwiń">')
    //mozilla
    if( s == url)
    {
      new Effect.BlindDown(id);
      new Effect.Appear(id);
      link.innerHTML = '<img src="images/frontend/arrow_down.gif" alt="zwiń">';
      link.title = "zwiń";
    }
    //iE7 i ie6
    else if ( s == url2 || s == url3 )
    {
      new Effect.BlindDown(id);
      new Effect.Appear(id);
      link.innerHTML = '<img src="images/frontend/arrow_down.gif" alt="zwiń">';
      link.title = "zwiń";
    }
    else
    {
      new Effect.BlindUp(id);
      new Effect.Fade(id);
      link.innerHTML = '<img src="images/frontend/arrow.gif" alt="rozwiń">';
      link.title = "rozwiń";
    }
  }
}