[BirdOPrey5]

OK so if you add this javascript to your template:

PHP Code:

<script type="text/javascript">
function switch_id2(C,E)
{
   var F = C.value;
   if(F=="")
   {
      return;
   }
   var B = new String(window.location);
   var A = new String("");
   B=B.split("#");
   if(B[1])
   {
      A = "#" + B[1];
   }
   B = B[0];
   if(B.indexOf(E+"id=") != -1 && is_regexp)
   {
      var D=new RegExp(E + "id=\\d+&?");
      B = B.replace(D, "");   
   } 
   if(B.indexOf("?") == -1)
   {
      B += "?";
   }
   else
   {
      lastchar = B.substr(B.length - 1);
      if(lastchar != "&" && lastchar != "?")
      {
         B += "&";
      }
   }
   window.location = B + E + "id=" + F + A;
}
</script> 


And then change the calls in your code from switch_id to switch_id2 it will work.