[killerOfCode]

I'm trying it atm, but the website is so SLOW!

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I did it!!

How:

Spoiler:

In the index page, you type in the XSS in the search bar. After doing so, I had an alert came up.

Also, this URL was at my awesome bar (ofc I use FireFox):

Spoiler:

*snip*

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Oh, also you can just do:
[spoiler]
1) Type something in the search bar
2) Replace ?val=[whatever you typed] with any XSS thing like: <script>alert("kaz_crack was here! Please refine your security. ");</script>
3) After notifying the admin, celebrate for being such a good hacker!
[/spoiler