To prevent jQuery Mobile from handling forms with redirect via Ajax, you need to turn Ajax Navigation off and handle the request through HTTP.
To do so, add data-ajax="false"
attribute to form
tag. This will stop Ajax Navigation on the form only.
Note that you will lose transition when moving for current form page to new page as Ajax is turned off, so data-transition="slide"
will have no effect.
<form action="" data-ajax="false" method="post" name="frmLogin" id="frmLogin">