function img_hover(imgName)
{
  if (document.images) { 
    imgHov = eval(imgName+"Hov.src"); 
    document[imgName].src=imgHov;
  }
}

function img_norm(imgName) 
{
  if (document.images) 
  {
    imgNorm = eval(imgName+"Norm.src");
    document[imgName].src=imgNorm;
  }
}

function displayWindow(url) 
{
  win = window.open(url,"displayWindow",'width=' + 530 + ',height=' + 550 + ',resizable=0,scrollbars=no,menubar=no,status=no,toolbar=no,alwaysRaised=2');
}