function showProdPreview(target,src,index){
 $(target).src = src;
 return false;
}
function checkCart(form){
 if(form.amount.value == ''){
   alert(translation.empty_amount);
   return false;
  }
return true;
}
function showProdHSPreview(el){
var splits =  el.src.split("/");
var index = splits[splits.length-2];
obj = document.getElementById('prod_thumb_holder_'+index);
hs.expand(obj,galleryOptions);
}