function shop_change_main_cat()
{
	document.location.href=shop_root+"?shop_action=overview&shop_action2=add_main_cat&shop_id=" +document.shop_main_cat.shop_main_cat_id.value
}
function shop_change_sub_cat()
{
	document.location.href=shop_root+"?shop_action=overview&shop_action2=add_sub_cat&shop_id=" +document.shop_sub_cat.shop_sub_cat_id.value
}