JS fixes

Attached a patch on ajaxsubmit.js that does the following:

• remove trailing ',' (comma) in options array, which breaks in older browsers like IE6
• update attribute selector: '[@name=X' (which is deprecated) has been changed to '[name="X"'
• also added form element error highlighting on sub elements; i.e., if you have a date form element consisting of three text fields, all three text field are highlighted if a form set error is applied on the date just like how it works if it wasn't ajax submitted.

Hope this patch is useful to you.
I'm using this patch on a deployed site w/o experiencing any issues.