function popupWindow(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=100,height=100,screenX=150,screenY=150,top=150,left=150')
}
//start gs associated
function check_the_box(prod_id)
{
 f = document.cart_quantity;
 for(i=0;i<f.elements.length;i++)
  {if((f.elements[i].name=='associated_purchase[]') && (f.elements[i].value==prod_id))
      f.elements[i].click();
  }
}
function onselect_check_the_box(prod_id, select_val)
{
 f = document.cart_quantity;
 for(i=0;i<f.elements.length;i++)
  {if((f.elements[i].name=='associated_purchase[]') && (f.elements[i].value==prod_id))
    {
      if(!f.elements[i].checked && select_val != ''){
        f.elements[i].click();
      }else if(f.elements[i].checked && select_val == ''){
        f.elements[i].click();
      }
    }
  }
}