jquery.validate.min.js (which is version 1.8.0)
One of the first things you might want to do is update the jquery version to the latest version, which today is version 1.7.1
After doing this, your client side validation will stop working in Internet Explorer 7 and Internet Explorer 8.
This is because the jquery.validate version is not compatible with jquery versions > 1.6. The solutions is simple, you need to update your version of jquery.validate as well. You can find the current version 1.9 from Microsoft’s CDN or the latest version from GitHub here:
Microsoft Ajax CDN: http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.min.js
GitHub Jquery Validation: https://github.com/jzaefferer/jquery-validation/downloads