This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
Note: Starting in Gecko 6.0,
document.height is no longer supported. Instead use
Returns the height of the
document object. In most cases, this is equal to the
<body> element of the current document.
height_value = document.height
// alert document height alert(document.height);
document.body.clientHeight document.documentElement.clientHeight document.documentElement.scrollHeight