jquery functions having no effect?

jquery functions having no effect?


Hi,
I've run into a problem where it seems that when I call certain jquery
functions nothing happens. Both for plugins and jquery-ui.
An example can be seen on http://test.hestar.dk. When clicking the
"Log på" button a dialog is supposed to slide down, but only the
overlay is shown.
Another example can be seen on http://test.hestar.dk/annoncer.action
where I attampt to make an accordion from some divs. A bit of styling
is applied, but not an accordion.
I also tried using jqDock for the dock effect (not online) and the $
("#id").jqDock() function seems to have no effect. This could of couse
be a plugin problem, but I have a suspision of some general problem.
Any help or insights appreciated!
-dennis