獲取可視窗口的高度

var winSize = function(){
            var xScroll, yScroll, windowWidth, windowHeight, pageWidth, pageHeight;
            // innerHeight獲取的是可視窗口的高度，IE不支持此屬性
            if (window.innerHeight && window.scrollMaxY) {
                xScroll = document.body.scrollWidth;
                yScroll = window.innerHeight + window.scrollMaxY;
            } else if (document.body.scrollHeight > document.body.offsetHeight) { // all but Explorer Mac
                xScroll = document.body.scrollWidth;
                yScroll = document.body.scrollHeight;
            } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
                xScroll = document.body.offsetWidth;
                yScroll = document.body.offsetHeight;
            }

            if (self.innerHeight) {    // all except Explorer
                windowWidth = self.innerWidth;
                windowHeight = self.innerHeight;
            } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
                windowWidth = document.documentElement.clientWidth;
                windowHeight = document.documentElement.clientHeight;
            } else if (document.body) { // other Explorers
                windowWidth = document.body.clientWidth;
                windowHeight = document.body.clientHeight;
            }

            // for small pages with total height less then height of the viewport
            if (yScroll < windowHeight) {
                pageHeight = windowHeight;
            } else {
                pageHeight = yScroll;
            }

            // for small pages with total width less then width of the viewport
            if (xScroll < windowWidth) {
                pageWidth = windowWidth;
            } else {
                pageWidth = xScroll;
            }

            return{
                'pageWidth':pageWidth,
                'pageHeight':pageHeight,
                'windowWidth':windowWidth,
                'windowHeight':windowHeight
            }
        }();
        //alert(winSize.pageWidth);

 

 

var test= document.getElementById("other1"); test.offsetLeft//是橫座標，test.offsetTop//是縱座標