"I somehow broke it" tells us nothing useful.
Can you provide a link to your site, and tell us exactly what doesn't work as you expect?
Also, we can't guess what plugins you used. Many plugins have similar or identical names. I was able to find Paver and FadeThis but can't be absolutely sure they are what you used. FadeThis hasn't been updated by the author in 3 years, and so might be "abandonware". You should always check the "freshness date" of plugins, and always make sure you get them from the author's own website or (typically) their Github. Always provide links to plugins.
Is there a reason you are using an old, obsolete version of jQuery?
BTW, it is Javascript, not Java. The two languages have nothing in common.