function confirmChangeStore(url)
{
  input_box=confirm("Your cart will be cleared if you continue.");
  if (input_box==true)
  { 
    // Output when OK is clicked
    window.location=url;
  }
  else
  {
  }
}


var isNN = (navigator.appName.indexOf("Netscape")!=-1);
function autoTab(input,len, e)
{
   if (!isNN)
      e = window.event;

   var keyCode = (isNN)?e.which:e.keyCode;
   var filter = (isNN)?[0,8,9]:[0,8,9,16,17,18,37,38,39,40,46];

   if (input.value.length >= len && !containsElement(filter,keyCode))
   {
      input.value = input.value.slice(0,len);
      input.form[(getIndex(input)+1)%input.form.length].focus();
      input.form[(getIndex(input)+1)%input.form.length].select();
   }
  return true;
}


function containsElement(arr, ele)
{
   var found = false, index = 0;
   while(!found && index < arr.length)
     if (arr[index]==ele)
        found = true;
     else
        index++;
   return found;
}


function getIndex(input)
{
   var index = -1, i = 0, found = false;
   while (i < input.form.length && index==-1)
     if (input.form[i] == input)
        index = i;
     else
        i++;
   return index;
}