Full-screen iframe with a height of 100%

Question

Is iframe height=100% supported in all browsers?

I am using doctype as:

Answer 1

You could use frameset as the previous answer states but if you are insistent on using iFrames, the 2 following examples should work:

An alternative:

To hide scrolling with 2 alternatives as shown above:

Hack with the second example:

To hide the scroll-bars of the iFrame, the parent is made overflow: hidden to hide scrollbars and the iFrame is made to go upto 150% width and height which forces the scroll-bars outside the page and since the body doesn't have scroll-bars one may not expect the iframe to be exceeding the bounds of the page. This hides the scrollbars of the iFrame with full width!