function swapImage(image250,image500, altText, divName)
{
  var d = document.getElementById(divName);
  var s = "<img src='"+image250+"' alt='"+altText+"' width='250' height='246' />";
  s += "<p class='zoomIn'><a href='javascript:popupImage(\""+image500+"\")'>(+) măreşte imaginea</a></p>";
  d.innerHTML = s;
}

function submitBuyForm(sizeAlert, colorAlert)
{
  var form = document.getElementById("buyFrm");
  if( checkBuyForm(form, sizeAlert, colorAlert) )
  {
    form.submit();
  }
}

function checkBuyForm( form, sizeAlert, colorAlert )
{
 if( form.size.value == "")
 {
   alert(sizeAlert);
   return false;
 }
 if( form.color.value == "")
 {
   alert(colorAlert);
   return false;
 }
 return true;
}