scrollHeight: Gets the scroll height of the object.
scrollLeft: Sets or gets the distance between the left edge of the object and the leftmost end of the currently visible content in the window
scrollTop: Sets or gets the distance between the topmost edge of the object and the leftmost end of the visible content in the window The distance between the tops
scrollWidth: Get the scroll width of the object
offsetHeight: Get the height of the object relative to the layout or the parent coordinate specified by the parent coordinate offsetParent property
offsetLeft :Gets the calculated left position of the object relative to the layout or the parent coordinates specified by the offsetParent property
offsetTop: Gets the calculated top position of the object relative to the layout or the parent coordinates specified by the offsetTop property
event.clientX is the horizontal coordinate relative to the document
event.clientY is the vertical coordinate relative to the document
event.offsetX is the horizontal coordinate relative to the container
event.offsetY is relative to the container Vertical coordinates
document.documentElement.scrollTop The value of vertical scrolling
event.clientX document.documentElement.scrollTop The amount of vertical scrolling relative to the horizontal coordinates of the document
Above Mainly refers to IE, the differences between FireFox are as follows:
IE6.0, FF1.06:
clientWidth = width padding
clientHeight = height padding
offsetWidth = width padding border
offsetHeight = height padding border
IE5.0/5.5:
clientWidth = width - border
clientHeight = height - border
offsetWidth = width
offsetHeight = height