DOM append to the top

Yo! I have a working form that adds user input to an XML file, it adds the new "item" element to the bottom of the list of previously created "item" elements. I would now like the new elements to be added to the top of the list. So far i've tried using: insertBefore() but i'm still getting elements added to the bottom. The XML looks like: <Clothes> <Item>...</Item> <Item>...</Item> <Item>...</Item> <----- new items are added here <Clothes> This is what my code looks like: $y = $dom -> getElementsByTagName("item"); $dom -> documentElement -> insertBefore($Xitem,$y); If trying to pass the top most "item" node to insertbefore() but without any luck. Any ideas ? Cheers Mongoose