Navigation: reduced code of resetActivePageHeight() and made it take margin into account as well.
Navigation: reduced code of resetActivePageHeight() and made it take margin into account as well.

arschmitz/uglymongrel-jquery-mobile,arschmitz/uglymongrel-jquery-mobile,hinaloe/jqm-demo-ja,arschmitz/uglymongrel-jquery-mobile,arschmitz/jquery-mobile,arschmitz/jquery-mobile,arschmitz/jquery-mobile,hinaloe/jqm-demo-ja,hinaloe/jqm-demo-ja