* Fixed invalid XHTML, preventing error label creation in IE since jQuery 1.1.4
* Fixed and improved String.format: Global search & replace, better handling of array arguments
* Fixed cancel-button handling to use validator-object for storing state instead of form element
* Fixed name selectors to handle "complex" names, eg. containing brackets ("list[]")
* Added button and disabled elements to exclude from validation
* Moved element event handlers to refresh to be able to add handlers to new elements
* Fixed email validation to allow long top level domains (eg. ".travel")
* Moved showErrors() from valid() to form()
* Added validator.size(): returns the number of current errors
* Call submitHandler with validator as scope for easier access of it's methods, eg. to find error labels using errorsFor(Element)
* Compatible with jQuery 1.1.x and 1.2.x