Parse an xml with namespace tags in javascript without using getElementByTag etc

[duongga]

I want to parse an xml which contains tags like\[code\]<media:group> <media:content type="video/mp4" url="http://cdn2.junctiontv.net/3dc/roku/Nikos_Gkougkoulias/Exotic_Drive_3D_SBS_Tag_HD_HI_AB1500.mp4" bitrate="1500" duration="3060" expression="full" backup_url=""/></media:group><media:thumbnail url="http://cdn2.junctiontv.net/3dc/images/exotic_drive.jpg"/>\[/code\]without using any browser dependent function like \[code\]getElemntbyTag\[/code\],\[code\]getElemntbyTagName\[/code\] or anything like DOM etc just using simple JavaScript