能导入Html的自适应文本框

on (release) {
_root.my_text.scroll--;//用来改变文本的当前行
}

on (release) {
_root.my_text.scroll++;//用来改变文本的当前行
}

Listener = new Object();
Mouse.addListener(Listener);
//给鼠标加入侦听器
Listener.onMouseWheel = function(delta) {
my_text.scroll = my_text.scroll-delta/2;
//这个最关键，delta 是数表滚轮滚动的距离，滚动1个刻度，delta=1
};
var ss:TextField.StyleSheet = new TextField.StyleSheet();//定义文本框的CSS
ss.load("sample.css");//倒入CSS文件
my_text.styleSheet = ss;
my_text.multiline = true; //定义文本框为多行
my_text.wordWrap = true;
my_text.html = true; //定义文本框为HTML格式，这很重要。
my_text.borderStyle = "none";
my_text.setStyle("marginRight", "20");//定义文本框的变矩。
my_text.textIndent = "50";
story = new XML();
story.ignoreWhite = true;
story.load("story.html");//倒入外部的story网页文件。并转换成XML格式。
story.onLoad = function() {
my_text.htmlText = story;//将story指向文本框。
if (this.my_text.maxscroll == 1) {
this.downside._visible = false;
this.upside._visible = false;
this.scroll._visible = false;
}
};

show_scroll.onPress = function() {
scroll_lock = "no";//定义BAR的锁锭，下同
};
show_scroll.onRelease = function() {
scroll_lock = "yes";
show_scroll.stopDrag();
};
show_scroll.useHandCursor = false;
show_scrollbg.onPress = function() {
scroll_lock = "no";
};
show_scrollbg.onMouseUp = function() {
scroll_lock = "yes";
};
total_height = Math.abs(show_scrollbg._height-show_scroll._height);//定义导航条的总高度。
show_scrollbg.useHandCursor = false;
_root.onEnterFrame = function() {
if (scroll_lock == "no") {
show_scroll.startDrag(false, show_scroll._x, 2, show_scroll._x, total_height+2);
//拖动BAR
scroll_percent = Math.floor((Math.abs(show_scroll._y)/total_height)*100);
_parent.my_text.scroll=Math.floor(scroll_percent*(_parent.my_text.maxscroll)/100);
//计算拖动的百分比，调整文本框的对应位置。
} else {
show_scroll.stopDrag();
if (_parent.my_text.scroll == _parent.my_text.maxscroll) {
show_scroll._y = total_height;
} else {
show_scroll._y=(Math.floor((_parent.my_text.scroll-1)/_parent.my_text.maxscroll*100)*total_height)/100;
}
}
//trace(_parent.my_text.scroll+"v"+_parent.my_text.maxscroll);
};
trace(_parent.my_text.scroll);

onClipEvent (enterFrame) {
if (this._y<0) {
this._y++;
}
if (this._y>262) {
this._y--;
}
}//限制BAR的活动范围，具体数值自己算．