pero' pure se c'e' jquery di mezzo, iniettare pezzi di form con innerHTML ti puo' sempre esporre a problemi

da http://api.jquery.com/html/
This method uses the browser's innerHTML property. Some browsers may not generate a DOM that exactly replicates the HTML source provided. For example, Internet Explorer prior to version 8 will convert all href properties on links to absolute URLs, and Internet Explorer prior to version 9 will not correctly handle HTML5 elements without the addition of a separate compatibility layer.
ci sono tanti altri modi di manipolare il DOM con jquery