下面是所有的AS代碼：
//%%%%%%%%%%%%MC類自定義方法%%%%%%%%%%%%//
//――――――繪圖方法――――//
//三角型方法
MovieClip.prototype.sanjiaoxing = function(zuobiao1, zuobiao2, zuobiao3, bangzhi, yanse, toumingdu) {
       this.lineStyle(bangzhi, yanse, toumingdu);
       this.moveTo(zuobiao1.x, zuobiao1.y);
       this.lineTo(zuobiao2.x, zuobiao2.y);
       this.lineTo(zuobiao3.x, zuobiao3.y);
       this.lineTo(zuobiao1.x, zuobiao1.y);
};
//寬高矩形法，根據(jù)初始點(diǎn)坐標(biāo)和寬與高確定矩形。x，y為初始點(diǎn)坐標(biāo)，kuan和gao為矩形的寬和高。
MovieClip.prototype.changkuanjuxing = function(x, y, kuan, gao, bangzhi, yanse, toumingdu) {
       this.lineStyle(bangzhi, yanse, toumingdu);
       this.moveTo(x, y);
       this.lineTo(x+kuan, y);
       this.lineTo(x+kuan, y+gao);
       this.lineTo(x, y+gao);
       this.lineTo(x, y);
};
//中心點(diǎn)矩形法，根據(jù)中心點(diǎn)的坐標(biāo)和寬與高確定矩形。x，y為中心點(diǎn)坐標(biāo)，kuan，gao為矩形的長和寬。
MovieClip.prototype.zhongxinjuxing = function(x, y, kuan, gao, bangzhi, yanse, toumingdu) {
       this.lineStyle(bangzhi, yanse, toumingdu);
       this.moveTo(x-kuan/2, y+gao/2);
       this.lineTo(x+kuan/2, y+gao/2);
       this.lineTo(x+kuan/2, y-gao/2);
       this.lineTo(x-kuan/2, y-gao/2);
       this.lineTo(x-kuan/2, y+gao/2);
};
//――――定位方法――――//
MovieClip.prototype.dingwei = function(x, y) {
       this._x = x;
       this._y = y;
};
//――――上色方法――――//
//定義一個(gè)獲取顏色值，并把它轉(zhuǎn)化成16進(jìn)制的函數(shù)       
//獲取顏色值的后六位，使此方法可以同時(shí)滿足“#FFFFFF”和“0xFFFFFF”兩種格式的顏色值
function jinzhizhuanhuan(yansezhi) {
       var yansezhi = yansezhi.substr(-6, 6);
       return parseInt(yansezhi, 16);
}
Color.prototype.shangse = function(yansezhi) {
       this.setRGB(jinzhizhuanhuan(yansezhi));
};
MovieClip.prototype.shangse = function(yansezhi) {
       var linshi_color = new Color(this);
       linshi_color.shangse(yansezhi);
};
//%%%%%%%%%%%加載XML文檔%%%%%%%%%%%%%//
gundongtiao_xml = new XML();
gundongtiao_xml.ignoreWhite = true;
gundongtiao_xml.load("gundongtiao.xml");
gundongtiao_xml.onLoad = function() {
       var jiedianlujing_xml = gundongtiao_xml.firstChild.childNodes;
       //滾動(dòng)條背景參數(shù)
       with (jiedianlujing_xml[0]) {
              var gundongtiaobeijingse = jinzhizhuanhuan(attributes["背景色"]);
              var gundongtiaotoumingdu = attributes["背景透明度"];
              var gundongtiaobiankuangse = jinzhizhuanhuan(attributes["邊框色"]);
              var gundongtiaobiankuangtoumingdou = attributes["邊框透明度"];
              var gundongtiaobiankuangcuxi = attributes["邊框粗細(xì)"];
              var gundongtiaokuan = attributes["寬"];
       }
       //方塊參數(shù)
       with (jiedianlujing_xml[1]) {
              var fangkuaibeijingse = jinzhizhuanhuan(attributes["背景色"]);
              var fangkuaitoumingdu = attributes["背景透明度"];
              var fangkuaibiankuangse = jinzhizhuanhuan(attributes["邊框色"]);
              var fangkuaibiankuangtoumingdou = attributes["邊框透明度"];
              var fangkuaibiankuangcuxi = attributes["邊框粗細(xì)"];
       }
       //三角參數(shù)
       with (jiedianlujing_xml[2]) {
              var sanjiaoyuanshise = jinzhizhuanhuan(attributes["原始色"]);
              var sanjiaohuodongse = jinzhizhuanhuan(attributes["活動(dòng)色"]);
              //記錄下原始色和活動(dòng)色，以備在“上”，“下”按鈕中使用
              jiluyuanshise = attributes["原始色"];
              jiluhuodongse = attributes["活動(dòng)色"];
              var sanjiaotoumingdou = attributes["透明度"];
       }
       //滑塊參數(shù)
       with (jiedianlujing_xml[3]) {
              var huakuaibeijingse = jinzhizhuanhuan(attributes["背景色"]);
              var huakuaitoumingdu = attributes["背景透明度"];
              var huakuaibiankuangse = jinzhizhuanhuan(attributes["邊框色"]);
              var huakuaibiankuangtoumingdou = attributes["邊框透明度"];
              var huakuaibiankuangcuxi = attributes["邊框粗細(xì)"];
       }
       //先根據(jù)文本域的高確定滾動(dòng)條的高
       gundongtiaogao = wenben_txt._height;
       ////////////中心法繪制滾動(dòng)條背景矩形條
       createEmptyMovieClip("gundongtiao_mc", 1000);
       gundongtiao_mc.beginFill(gundongtiaobeijingse, gundongtiaotoumingdu);
       gundongtiao_mc.zhongxinjuxing(0, 0, gundongtiaokuan, gundongtiaogao, gundongtiaobiankuangcuxi, gundongtiaobiankuangse, gundongtiaobiankuangtoumingdou);
       gundongtiao_mc.endFill();
       //根據(jù)文本域的位置確定滾動(dòng)條位置，使其緊貼在文本域的右端
       gundongtiao_mc.dingwei(wenben_txt._x+wenben_txt._width+gundongtiao_mc._width/2, wenben_txt._y+wenben_txt._height/2);
       /////////中心點(diǎn)矩形法繪制滾動(dòng)條上下按鈕
       //////繪制上按鈕背景方塊
       gundongtiao_mc.createEmptyMovieClip("shangfangkuai_mc", 1);
       gundongtiao_mc.shangfangkuai_mc.beginFill(fangkuaibeijingse, fangkuaitoumingdu);
       gundongtiao_mc.shangfangkuai_mc.zhongxinjuxing(0, 0, gundongtiao_mc._width, gundongtiao_mc._width, fangkuaibiankuangcuxi, fangkuaibiankuangse, fangkuaitoumingdu);
       gundongtiao_mc.shangfangkuai_mc.endFill();
       //定位上按鈕背景方塊
       gundongtiao_mc.shangfangkuai_mc.dingwei(0, -gundongtiao_mc._height/2+gundongtiao_mc.shangfangkuai_mc._height/2);
       //////繪制上按鈕三角形
       gundongtiao_mc.createEmptyMovieClip("shangsanjiao_mc", 2);
       //中心點(diǎn)法繪制三角形
       //首先定義一個(gè)因子，此因子等于正三角形中心到各頂點(diǎn)的距離，用來定位三角形各頂點(diǎn)的位置。
       var yinzi = gundongtiaokuan/3;
       var zuobiao1x = -1/2*Math.pow(3, 1/2)*yinzi;
       var zuobiao1y = 1/2*yinzi;
       var zuobiao2x = 1/2*Math.pow(3, 1/2)*yinzi;
       var zuobiao2y = 1/2*yinzi;
       var zuobiao3x = 0;
       var zuobiao3y = -yinzi;
       var zuobiao1 = {x:zuobiao1x, y:zuobiao1y};
       var zuobiao2 = {x:zuobiao2x, y:zuobiao2y};
       var zuobiao3 = {x:zuobiao3x, y:zuobiao3y};
       gundongtiao_mc.shangsanjiao_mc.beginFill(sanjiaoyuanshise, sanjiaotoumingdou);
       gundongtiao_mc.shangsanjiao_mc.sanjiaoxing(zuobiao1, zuobiao2, zuobiao3, 1, 0x000000, 0);
       gundongtiao_mc.shangsanjiao_mc.endFill();
       //定位上三角形
       gundongtiao_mc.shangsanjiao_mc.dingwei(0, -gundongtiao_mc._height/2+gundongtiao_mc.shangfangkuai_mc._height/2);
       //////復(fù)制上按鈕背景方塊和三角形，并定位于下方
       //復(fù)制下方塊
       gundongtiao_mc.shangfangkuai_mc.duplicateMovieClip("xiafangkuai_mc", 3);
       //定位下按鈕背景方塊，這里的Y坐標(biāo)加一，是為了讓下方塊跟文本框底部對齊！
       gundongtiao_mc.xiafangkuai_mc.dingwei(0, Math.floor(gundongtiao_mc._height/2-gundongtiao_mc.xiafangkuai_mc._height/2)+1);
       //復(fù)制下三角形
       gundongtiao_mc.shangsanjiao_mc.duplicateMovieClip("xiasanjiao_mc", 4);
       //旋轉(zhuǎn)180度
       gundongtiao_mc.xiasanjiao_mc._rotation = 180;
       //定位下三角形
       gundongtiao_mc.xiasanjiao_mc.dingwei(0, gundongtiao_mc._height/2-gundongtiao_mc.xiafangkuai_mc._height/2);
       ///////////繪制滑塊
       //長寬矩形法繪制滑塊矩形
       gundongtiao_mc.createEmptyMovieClip("huakuai_mc", 5);
       gundongtiao_mc.huakuai_mc.beginFill(huakuaibeijingse, huakuaitoumingdu);
       gundongtiao_mc.huakuai_mc.changkuanjuxing(-gundongtiao_mc._width/2, 0, gundongtiao_mc._width, gundongtiao_mc._width, huakuaibiankuangcuxi, huakuaibiankuangse, huakuaibiankuangtoumingdou);
       gundongtiao_mc.huakuai_mc.endFill();
       //---------滾動(dòng)初始化---------//
       //滑塊的初始高度，并記錄
       chushigaodu = Math.floor(gundongtiao_mc.xiafangkuai_mc._y-gundongtiao_mc.shangfangkuai_mc._y-gundongtiao_mc.shangfangkuai_mc._height);
       //初始化滑塊Y坐標(biāo)，并記錄
       ychushiweizhi = gundongtiao_mc.huakuai_mc._y=Math.round(gundongtiao_mc.shangfangkuai_mc._y+gundongtiao_mc.shangfangkuai_mc._height/2);
       //小滑塊不可見
       gundongtiao_mc.huakuai_mc._visible = false;
};
//%%%%%%%%%%%%%%%%滾動(dòng)代碼%%%%%%%%%%%%%%%%%%//
//////////為父剪輯的文字域注冊偵聽器，以偵聽在文字域產(chǎn)生變化時(shí)，也就是在文本被載入進(jìn)來時(shí)，執(zhí)行下面的代碼。這樣就不用擔(dān)心代碼執(zhí)行順序問題！
var zhentingqi = new Object();
wenben_txt.addListener(zhentingqi);
//當(dāng)文字域載入完成時(shí)，為什么觸發(fā)onScroller事件，而不是onChange事件？
zhentingqi.onScroller = function() {
       trace("-------------------------");
       trace("滾動(dòng)總行數(shù)="+wenben_txt.maxscroll);
       trace("當(dāng)前行="+wenben_txt.scroll);
       //判斷滑塊兒是否顯示，并根據(jù)文本內(nèi)容多少定義滑塊高度
       if (_parent.wenben_txt.maxscroll != 1) {
              gundongtiao_mc.huakuai_mc._visible = true;
              //定義一個(gè)高度因子，此因子隨加載文本的增多，將無限趨向于1。
              var gaoduyinzi = 1-(wenben_txt.maxscroll-1.5)/wenben_txt.maxscroll;
              //初始化滑塊的高度，它的最小高度定義為2象素。
              gaodu = gundongtiao_mc.huakuai_mc._height=Math.floor(chushigaodu*Math.pow(gaoduyinzi, 1/6));
              trace("滑塊高="+gaodu);
       }
       //滑塊滾動(dòng)的總象素?cái)?shù)
       var zongxiangsu = gundongtiao_mc.xiafangkuai_mc._y-gundongtiao_mc.shangfangkuai_mc._y-gundongtiao_mc.shangfangkuai_mc._height-gundongtiao_mc.huakuai_mc._height;
       //定義平均象素,每一行所包含的像素?cái)?shù)，即文本域每滾動(dòng)一行，滑塊需要移動(dòng)的象素?cái)?shù)。              
       var pingjunxiangsu = zongxiangsu/(wenben_txt.maxscroll-1);
       //定義平均行數(shù),每一像素包含的行數(shù)，即滑塊每移動(dòng)一象素，文本域在理論上應(yīng)當(dāng)滾動(dòng)的行數(shù)（盡管非整數(shù)行在視覺上沒有反映）。
       var pingjunhangshu = (wenben_txt.maxscroll-1)/Math.floor(zongxiangsu);
       trace("滾動(dòng)總象素="+zongxiangsu);
       trace("平均象素值="+pingjunxiangsu);
       ///////////定義上按鈕
       gundongtiao_mc.shangfangkuai_mc.onRollOver = function() {
              gundongtiao_mc.shangsanjiao_mc.shangse(jiluhuodongse);
              this.onPress = function() {
                     this.onEnterFrame = function() {
                            wenben_txt.scroll--;
                            // 使滑塊兒移動(dòng)到相應(yīng)的位置。
                            gundongtiao_mc.huakuai_mc._y = ychushiweizhi+pingjunxiangsu*(wenben_txt.scroll-1);
                            trace("滑塊Y坐標(biāo)="+gundongtiao_mc.huakuai_mc._y);
                     };
              };
              this.onRelease = function() {
                     delete this.onEnterFrame;
              };
              this.onRollOut = function() {
                     gundongtiao_mc.shangsanjiao_mc.shangse(jiluyuanshise);
              };
       };
       ////////////定義下按鈕
       gundongtiao_mc.xiafangkuai_mc.onRollOver = function() {
              gundongtiao_mc.xiasanjiao_mc.shangse(jiluhuodongse);
              this.onPress = function() {
                     this.onEnterFrame = function() {
                            wenben_txt.scroll++;
                            //使滑塊兒移動(dòng)到相應(yīng)的位置。       
                            gundongtiao_mc.huakuai_mc._y = ychushiweizhi+pingjunxiangsu*(wenben_txt.scroll-1);
                            trace("滑塊Y坐標(biāo)="+gundongtiao_mc.huakuai_mc._y);
                     };
              };
              this.onRelease = function() {
                     delete this.onEnterFrame;
              };
              this.onRollOut = function() {
                     gundongtiao_mc.xiasanjiao_mc.shangse(jiluyuanshise);
              };
       };
       ///////////換用MOUSE對象的onMouseWheel方法結(jié)合偵聽器實(shí)現(xiàn)滑塊隨鼠標(biāo)滾球滾動(dòng)
       mouseListener = new Object();
       Mouse.addListener(mouseListener);
       mouseListener.onMouseWheel = function(delta) {
              delta = 1;
              gundongtiao_mc.huakuai_mc._y = ychushiweizhi+pingjunxiangsu*(wenben_txt.scroll-1);
       };
       ///////////滑塊MC事件處理，當(dāng)鼠標(biāo)經(jīng)過或按下時(shí)
       gundongtiao_mc.huakuai_mc.onPress = function() {
              //開始拖動(dòng)
              this.startDrag(false, this._x, ychushiweizhi, this._x, Math.round(gundongtiao_mc.xiafangkuai_mc._y-gundongtiao_mc.xiafangkuai_mc._height/2-gundongtiao_mc.huakuai_mc._height));
              //使文本隨滑塊滾動(dòng)
              this.onEnterFrame = function() {
                     //在滾動(dòng)過程中即時(shí)獲得“滑塊所處位置”
                     var xianzaiweizhi = Math.floor(this._y);
                     trace("現(xiàn)在位置="+xianzaiweizhi);
                     //使文本隨滾動(dòng)條滾動(dòng),這里為什么要加1，可見scroll屬性值應(yīng)該是取正的，也就是說它會(huì)刪除小數(shù)部分，而非采用四舍五入制？
                     wenben_txt.scroll = (xianzaiweizhi-ychushiweizhi)*pingjunhangshu+1;
                     trace("scroll值="+Math.floor((xianzaiweizhi-ychushiweizhi)*pingjunhangshu+1));
                     trace("初始位置="+ychushiweizhi);
                     trace("現(xiàn)在位置="+xianzaiweizhi);
              };
       };
       //滑塊MC事件處理，鼠標(biāo)移出或釋放時(shí)
       gundongtiao_mc.huakuai_mc.onRollOut = gundongtiao_mc.huakuai_mc.onRelease=function () {
              // “滑塊”停止拖動(dòng)
              this.stopDrag();
              // 停止文本隨滑塊滾動(dòng)事件
              delete this.onEnterFrame;
       };
};