jQuery not defined? Empty jQuery function in wp_head();?

Hey guys...I'm running into an odd JS error:

Error: jQuery is not defined
Source File: http://www.missouladowntown.com/add-property/
Line: 46

Also here:
http://www.missouladowntown.com/contact/
http://www.missouladowntown.com/add-member/

But not, say, here (no GF form):
http://www.missouladowntown.com/dine/

This seems to be appearing on any page within our site that has an embedded GF Form....here's the rendered source code (empty function) that's triggering there firebug/JS error:

'<script>
jQuery(function(){
});
</script>'

Any thoughts as to why this function is printing out and/or why it is empty?

Thanks in advance.

You are probably making calls to jQuery before it has loaded. This might be happening if you are loading jQuery and other scripts in the footer/end of the body. What you can do is queue the calls to jQuery and then execute them once jQuery is loaded. Colin has a very good script for doing so here: http://blog.colin-gourlay.com/blog/2012/02/safely-using-ready-before-including-jquery/ .