How to resize Facebook Canvas app (iFrame) correctly?

Question

I need to adjust canvas size after updating content of a page. I can do it explicitly by

FB.Canvas.setSize({ width: 760, height: 1480 });

howev

Answer 1

When resizing to the minimum height do not forget to make it a little bit bigger than it is, to account for horizontal scrolling bar and some extra pixels that some browsers add, otherwise you will end-up with vertical scroll.

Also I do not recommend to use body to count height.

This worked for me :

window.fbAsyncInit = function() 
{FB.Canvas.setSize({height:document.getElementById('m_table').offsetHeight+40});}

where m_table is table ID with all my content (you can use div instead).