I add web part to a page, chose edit this webpart on popup menu and in editor zone click "ok" but nothing happend. it seems that ok button is completely dead.
thanks for your advice.
If you are using Internet Explorer, HIT F12, click Script Tab and click Start Debugging. Click the OK button and see if any errors pops up.
Cheers for the suggestion with the JS. I looked at the HMTL source of the webpart, disabled (commented-out) the JS section and it works now. I'd suggest the OP to do the same - if he/she understands what JS "does" to HTML :)