iPhone mode question

My Joomla site has the Top Of Page plugin installed. On my nokia N8 the page displays fine with TOP being a 'button' on the bottom of the page.

On my friends iPhone TOP becomes a block over the whole screen.

Is there something about my setup that is causing this different behaviour, or is it an iPhone browser issue?

Is here anything I can do about it (other than uninstall TOP)?

Thanks for your help.

Add following rules to templates/mobile_iphone/css/custom.css:

#gototop {
min-height: 0 !important;
width: auto;
-webkit-backface-visibility: initial;
}

Thanks, will give it a go.