Backing out the change from 841f9ff7, it was...

Backing out the change from 841f9ff7, it was ineffectual in Internet Explorer. Keeping the broken test case, for now, so that we can check into the issue some more.

src/attributes.js

@@ -268,15 +268,8 @@ jQuery.extend({
 						throw "type property can't be changed";
 					}
 
-					// browsers index elements by id/name on forms, give priority to attributes.
-					if( jQuery.nodeName( elem, "form" ) ) {
-						// convert the value to a string (all browsers do this but IE) see #1070
-						elem.setAttribute( name, "" + value );
-
-					} else {
 					elem[ name ] = value;
 				}
-				}
 
 				// browsers index elements by id/name on forms, give priority to attributes.
 				if ( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) ) {