Broken element - can't figure out the problem (Accordian pane)

My site is:

I have an "accordion pane" which has been functioning fine until I made some changes to the plugin ABOVE it (on a totally separate file).

Basically, you click on the titlebar (where it says) and then content scrolls out (and hides in the opposite pane). It was functioning until I made some changes with my featured content slider, so I am pretty sure the problem might lie there, but I am not too sure. Any ideas how i can get it to function again?

It is supposed to be similar to the one found on this website:
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Wow, that's some messy XHTML.
I think you may be missing a closing div after the top accordion pane, but it's tough to tell.

Personally, I would start with correcting some of the errors listed here:
and see where that gets you.
Ray PaseurCommented:
The page took 27 seconds to load.  In addition to getting the page to validate, you might want to get Firefox, Firebug, and YSlow.  All three are free and open source (google them).  They will be able to tell you why it takes so long for the page to come up.
VenusBreezeAuthor Commented:

it is now on Wordpress so the XHTMLl is all over the place in different files. The page is faster now, sometimes my server gets bogged down. Yet, the accordion problem is still there. If nobody knows how to fix it, is it possible that anyone knows how to restore a wordpress website to an earlier version (i.e. before I made changes to the featured content slider when the accordion panel broke?)
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David S.Commented:
I would like to suggest that you would be more likely to get help if you corrected the XHTML errors in order to rule that out as the cause of the problem, which by the symptoms shown suggests that it is the cause.

To improve loading speed which also seems to be a big problem for your site, I recommend you check out Minify (there even seem to be two WordPress plugins that use it).
VenusBreezeAuthor Commented:
Thanks, but whenever I try those and fix the errors, my entire wordpress site gets messed up and doesn't function at all. Can someone just tell me how to restore my wordpress files to a month ago before this issue started?
Ray PaseurCommented:
how to restore my wordpress files to a month ago ...

It may be water under the bridge now, but many of us like to use "versioning" software.  GIT or SVN are popular choices.  They make it easy to set and recover different release levels of your software.

Best of luck with it, ~Ray

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