It looks like your JavaScript or JavaScript framework is adding attributes to your
Submit that your current DOCTYPE does not support.
Find your DOCTYPE and swap it out. It should be the first thing on your page (or your master/layout page if you're nesting) and will likely look like:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
Now you have a choice, you can either jump into HTML5 or you can stick with HTML4 in a transitional context. To do HTML4 Transitional change the DOCTYPE tag to:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
or you can take the modern approach, which is surprisingly terse:
<!DOCTYPE html>
My advice would be the latter, since HTML4 is currently really a legacy technology, and you can fairly easily implement backwards compatibility by using libraries such as Modernizr. Honestly with the capabilities that HTML5 brings to the table, you'll find it much more pleasant to work with.