Added some additional checks to make sure that the correct methods are being used in IE on XML documents.
Added some additional checks to make sure that the correct methods are being used in IE on XML documents.

diracdeltas/jquery,batiste/jquery,demetr84/Jquery,sancao2/jquery,rwaldron/jquery,roytoo/jquery,fat/jquery,jquery/jquery,gnarf/jquery,kpozin/jquery-nodom,diracdeltas/jquery,roytoo/jquery,roytoo/jquery,Karyotyper/jquery,batiste/jquery,jquery/jquery,isaacs/jquery,diracdeltas/jquery,mislav/jquery,praveen9102/Shazam,eburgos/jquery,scottjehl/jquery,kpozin/jquery-nodom,npmcomponent/component-jquery,scottjehl/jquery,demetr84/Jquery,chitranshi/jquery,eburgos/jquery,hoorayimhelping/jquery,gnarf/jquery,quiaro/request-agent,praveen9102/Shazam,Karyotyper/jquery,chitranshi/jquery,jcutrell/jquery,RubyLouvre/jquery,eburgos/jquery,rwaldron/jquery,npmcomponent/component-jquery,dtjm/jquery,sancao2/jquery,RubyLouvre/jquery,ilyakharlamov/jquery-xul,Karyotyper/jquery,hoorayimhelping/jquery,dtjm/jquery,fat/jquery,jquery/jquery,sancao2/jquery,ilyakharlamov/jquery-xul,isaacs/jquery,jcutrell/jquery,mislav/jquery