I have a issue with my jquery mobile header.

I include 2 photo link.

https://www.dropbox.com/s/7sb24il6ygj5cfn/2.png

https://www.dropbox.com/s/xmy0njl49z1gab7/3.png

Image 1: I tap in the textarea and de app slide down and the keyboard pops up. So far so good.

Image 2: If I'm done typing I hit the button 'verstuur' (dutch for send) then the keyboard disappears and my header is moving to the middle.

i have this line of code for my header

<div data-role="header" data-position="fixed" data-tap-toggle="false"> <a href="#mypanel" data-theme="reset" data-icon="menubars" data-iconpos="notext">Navigation</a> <h1>Melding</h1> <a onClick="RefeshPagina()" data-theme="reset" data-icon="reload" data-iconpos="notext">Reload</a> </div>

I hope someone can help me.