I need a div to be 100% of the page height, rather than the browser window height. Here's my div style:
This is a mask over which I place a "pop-up" for users to make a selection on. The mask is to prevent them from clicking anything else on the underlying page and to focus their attention on the div placed on top of the mask outlined above. The problem is that they can simply scroll down the page, and since the mask is only as high as the browser window, they have access to any links below the mask.