ipad ios 6 post https problem

ipad ios 6 post https problem

Hello, i'm a  novice, i made a form with jquery mobile, login form. I use method POST and action over external domain in https (WLC Cisco vpn appliance). I notice that the action on submit button don't goes well. Nothing uppen.

Form Example:

<form name="loginForm" action="https://www.example.com" method ="POST" data-ajax="false">
... ....

 <input data-theme="b" data-icon="arrow-r" data-iconpos="left" value="Accedi" type="button" name="Submit" onclick="submitAction();"/>
</form>

The action stop at this line in javascript function submitAction();

#
function submitAction(){
......

# Last row

// hadware with ios 6 don't execute this javascript with externaldomain action nothing uppen no feedback
document.forms['loginForm'].submit();

}
#

This problem regard every ios 6 system on my test, with samsung SIII or blackberry everything goes well.
Can someone help me please thank's