jsf.ajax.request source should accept form element

In some cases it is useful to directly pass the form element as the "source" parameter for jsf.ajax.request(source, |event|,

);

The following modification to _Dom.js provides this feature:

fuzzyFormDetection : function(elem) {

...
//before going into the more complicated stuff we try the simple approach
if (!_Lang.isString(elem)) {
if (_Lang.equalsIgnoreCase(elem.tagName, "form"))

return this.getParent(elem, "form");
}