Screen size problem - HTML5

Hi there

I’m struggling to get my game to run full screen on android devices. I want my game to run on screen orientation: landscape.Secondly I would like the screen to be set on stretch to fill …if it’s possible. Currently I’m getting this ugly white borders on the sides of my application when it is running on my android device.I’ve already tried setting it to full screen ,but it doesn’t work.
Ps: My Window size is set to 800x600
Please help :cry: