If the input to my form is the XML file…

<?xml version="1.0"?>
<item type="input" name="login" value="" label="Login" info="true" >

The info=“true” produces a neat question mark link after the label (eg Login [?])

How do I access this link, (eg to show extra information to the user)?

Form have event, triggered after user click on [?]:

myForm.attachEvent("onInfo", function(name) { //your code });

Thanks, that worked nicely.