I have had a search but can't find exactly what I want to achieve, in CSS anyway I'm not sure if there could be a jQuery script that could help.

I want to create a div on my website which fills the entire height of the page (no further than the area below the scroll just the first area of the screen filled vertically). I want this to adjust to the height of device so on a desktop and iPhone for example the whole screen vertical height is filled. 

I'm not sure if I can post websites but this is the look I'm after <http://alexcerezo.com>