function showImage(img, page)
{
   if(page == 1)      var newImage = "images/konfigurator/seite1/" + img + "_big.jpg";
   if(page == 2)      var newImage = "images/konfigurator/seite2/" + img + "_big.jpg";
   if(page == 3)      var newImage = "images/konfigurator/seite3/" + img + "_big.jpg";
   if(page == 4)      var newImage = "images/konfigurator/seite4/" + img + "_big.jpg";
   
   $('preview').src = newImage;
}

function hideImage()
{
   $('preview').src = "images/pixel.gif";
}

function markWatercooler(id)
{
   $(id).checked = "checked";
}

function setFocus(id)
{
  $(id).focus();
}

function setBecher (id)
{
    $(id).checked = "checked";
}