Javascript Not Functioning At All on Drupal 7 I haven't worked on building out my site for about 5 or 6 days only to come back to find that Javascript is completely non-functional on my site. As far as I can remember (about 90% positive), everything worked fine last time I worked on it.

Using Firebug, I've found the following error 4 times:

jQuery is not defined
})(jQuery); 


And this error 7 times:

Drupal is not defined
jQuery.extend(Drupal.settings, {"basePath":"\/","pathPrefix":"","ajaxPageState":{"theme":"capstoneskele","theme_token":"4I-qysgFuZXzCXVlRhgBo6i118JK5s1LLy2-a_ti1lE","js":{"misc\/jquery.js":1,"misc\/jquery.once.js":1,"misc\/drupal.js"......(cont'd)


I've been mostly playing around with a custom theme, so perhaps it's something with one of my tpl.php files - I'm new to Drupal so I really don't know. Any ideas/help would be greatly appreciated as my graduating college is dependent on this project...thanks!

please let me know what further details I can provide also...
Check that in html jquery.js and drupal.js correctly open - just click on links in firefox html source view, it's should open js files.
Check your jquery.js and drupal.js in misc folder, if files exists, compare with drupal archive. 
Check how many jquery-VERSIONS.js files attached in html, possibly conflicts can be there.
Check your html source for embedded js scripts (viruses like it).