Changing weight from contentpage doesn't work; throws httpRequest error

On the content administrator page (Home › Administer › Content management > Content) there are dropdowns for the weight, but once a value is selected there's no button to apply the new setting. I've tried anything but it will reset every time I hit update.

Error in firebug: "httpRequest is not defined .."
Fix: add httprequest.js to the header in the drupal way

(same issue and fix as http://drupal.org/node/314243 but here's a patch attached and is for 5.x-1.1)

Note: I didn't test how this works against 5.x.1-1 cvs, but I glanced at the source there: looks like there's also the addition of some weight.module css file as well?.. I didn't incorporate that here.