頁面高度寬度各瀏覽器兼容腳本

function GetPageSize() {  //獲取頁面高度寬度
    var scrW, scrH;  
    if(window.innerHeight && window.scrollMaxY) {    // Mozilla    
        scrW = window.innerWidth + window.scrollMaxX;    
        scrH = window.innerHeight + window.scrollMaxY;  } 
    else if(document.body.scrollHeight > document.body.offsetHeight){      
        scrW = document.body.scrollWidth; scrH = document.body.scrollHeight; } 
    else if(document.body) { // IE Mac    
        scrW = document.body.offsetWidth;    
        scrH = document.body.offsetHeight; }    

    var winW, winH;  
    if(window.innerHeight) { // all except IE    
        winW = window.innerWidth;    winH = window.innerHeight;  } 
    else if (document.documentElement     && document.documentElement.clientHeight) {    // IE 6 Strict Mode    
        winW = document.documentElement.clientWidth;     winH = document.documentElement.clientHeight;  } 
    else if (document.body) { 
        winW = document.body.clientWidth;    
        winH = document.body.clientHeight;  
    }    // for small pages with total size less then the viewport  
    var pageW = (scrW<winW) ? winW : scrW;  var pageH = (scrH<winH) ? winH : scrH;    
    return {PageW:pageW, PageH:pageH, WinW:winW, WinH:winH };
}
//頁面滾動高度
function GetPageScroll() {  
    var x, y;  
    if(window.pageYOffset) {    // all except IE    
        y = window.pageYOffset;    x = window.pageXOffset; } 
    else if(document.documentElement     && document.documentElement.scrollTop) {    // IE 6 Strict    
        y = document.documentElement.scrollTop;    x = document.documentElement.scrollLeft;  } 
    else if(document.body) {    // all other IE    
        y = document.body.scrollTop;  x = document.body.scrollLeft; }  
    return {X:x, Y:y};
}