Heights in jQuery
<?php
//* Do NOT include the opening php tag shown above. Copy the code shown below.
<!-- Height of browser window: -->
var winheight = $(window).height()
<!-- Height of entire document: -->
var docheight = $(document).height()
<!-- Distance scrolled from top: -->
var scrollTop = $(window).scrollTop()
<!-- Element's offset from top: -->
targetoffsetTop = $('#header').offset().top // get distance between top of header element and top of document