What is the difference between height, scrollHeight and style.height

Hi:

I have a IFrame called "dataFrame". Does anybody know the difference between

document.getElementById('dataFrame').height

and

document.getElementById('dataFrame').Document.body.scrollHeight;

and

document.getElementById('dataFrame').style.height

Yours,

Frustrated

 

height returns the height of a iframe.
Document.body.scrollHeight returns the total height of a window with scroll included.

style.height can be used to define height

Ex: document.getElementById("whatever").style.height=500;