help - adjust onclick addtocart function

[Snowman]

i need to adjust the orderform addtocart function so that from the configure product page when you click to add to the cart the order will get added but the page will redirect to a different product group rather than the view cart page

 

the html line code is

 

<input type="button" value="{$LANG.continueshopping} »" class="checkout" onclick="addtocart();" /><br />

 

the js code is

 

functionaddtocart (gid) {    jQuery("#loading1").slideDown();
   jQuery.post("cart.php", 'ajax=1&a=confproduct&'+jQuery("#orderfrm").serialize(),
   function(data){
       if (data) {
           jQuery("#configproducterror").html(data);
           jQuery("#configproducterror").slideDown();
           jQuery("#loading1").slideUp();
       } else {
           if (gid) window.location='cart.php?gid='+gid;
           else window.location='cart.php?a=confdomains';
       }
   });

 

now i know that if i adjust the onclick to use

onclick="addtocart('43');"

this button will not go to the view cart page but will instead load product group 43

 

what i want to achieve however is to add the order to the cart on click and redirect to group 43

 

can anyone assist me with this adjustment to the js code to achieve this