Sometimes, the javascript from other extensions like “Powermail” will override your other javascript libraries. I have found two possible solutions:
First Option :
page.includeJSFooterlibs.powermailJQuery > page.includeJSFooterlibs.powermailJQueryUi >
Second Options:
page.includeJSlibs { powermail_jQuery > powermail_jQueryTools > powermail_jQueryToolsTabs > }
Add this to your template setup and problem solved.