視窗的SIZE還有SCROLL的位置

Getting window size and scroll bars position in JavaScript/DHTML:
http://www.softcomplex.com/docs/get_window_size_and_scrollbar_position.html
這篇文章分析了視窗的SIZE還有SCROLL的位置(節錄部份)

Parameter	window	documentElement	body
Window Width	window.innerWidth	document.documentElement.clientWidth	document.body.clientWidth
Window Height	window.innerHeight	document.documentElement.clientHeight	document.body.clientHeight
Horizontal Scroll	window.pageXOffset	document.documentElement.scrollLeft	document.body.scrollLeft
Vertical Scroll	window.pageYOffset	document.documentElement.scrollTop	document.body.scrollTop