Scripting issue – www does not work

Hello!

I have a problem with my site alleydogdesigns.com: the http://www.alleydogdesigns.com version doesn’t work properly. The contact form will not send, the project thumbnails don’t go anywhere, and the icons look strange.

I originally contacted the developers of the theme I am using “Visia” when I found the contact form wasn’t working.
They told me I had to point my www to the non www and that would fix it.

I tried that and had some errors with my site (wouldn’t load).
Talking with my hosting (GoDaddy), they told me not to do that, and ran a search through my site and were not able to figure out the problem. They came to the conclusion that it’s a WP problem (a scripting issue). They said all the DNS is correct.

Can anyone help me figure this out? I’m relatively new to WordPress.
Thank you!