setUserData

allows attaching user data to a form without modifying the DOM

void setUserData(string name,string value,string udKey,mixed udValue);

name	string	the name of an item
value	string	the value of an item (radiobutton only, omit for other types)
udKey	string	the key that will point to the stored user data
udValue	mixed	the value of userdata associated with "udKey"

Example

// for radio button
myForm.setUserData("mode", "a", "auto", true);
myForm.setUserData("mode", "a", "size", 10);
// for other types
myForm.setUserData("login", "max_length", 15);
myForm.setUserData("login", "char_allowed", 15);