Поменял на <script type="text/javascript" src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
То же самое:
Uncaught exception: TypeError: '$("#showcase1").awShowcase' is not a function
Error thrown at line 3, column 1 in <anonymous function>() in http:// *** /js/description.js:
$("#showcase1").awShowcase(
called from line 2, column 33900 in <anonymous function: v.Callbacks>(t) in
http://code.jquery.com/jquery-1.8.3.min.js: