(Stolen from Jeremy Keith and Dustin Diaz: http://domscripting.com/blog/display/38).

Unobtrusive script takes a form inputs type attribute and copies it to that input's class. So, you go from...

<input type="text" />

...to...

<input type="text" class="text" />

Basically allows attribute selectors for form until IE catches up.

/*
	form.js
	AUTH: Austin Govella (austin.govella@gmail.com)
	DATE: 2006-07-01
	DESC: Includes form specific javascripts.
	NOTE: Stolen from Jeremy Keith and Dustin Diaz: http://domscripting.com/blog/display/38
	REVS:  
*/



function appendInputTypeClasses()
{	/* adds input type as the inputs class */
	if ( !document.getElementsByTagName ) return;

	var inputs = document.getElementsByTagName('input');
	var inputLen = inputs.length;
	for ( i=0; i < inputLen; i++ )
	{
		if ( inputs[i].getAttribute('type') )
		{
			inputs[i].className += ' '+inputs[i].getAttribute('type');
		}
	}
}