<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>自制滚动条样式</title>
</head>
<body>
<style type="text/css">
#wraper{position:relative;width:500px;height:200px;padding-right:10px;background-color:#F6F6F6;overflow:hidden;}
#slider{position:absolute;top:0;left:0;margin:0 10px;line-height:1.5;font-size:12px;color:#333;}
#pannel{position:absolute;right:0;top:0;width:6px;height:100%;background-color:#EDEDEB;}
#drag{position:absolute;left:0;width:6px;height:80px;background-color:#BCBCBA;cursor:pointer;}
</style>
<div id="wraper">
<div id="slider">
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<p>【酒量最好的前三名星座】冠军（巨蟹座）、亚军（魔羯座）、季军（金牛座）【酒品最好的前三名星座】冠军（天秤座）、亚军（双鱼座）、季军（水瓶座）【酒量不好，有酒胆，会耍宝的前三名星座】冠军（双子座）、亚军（射手座）、季军（狮子座）。</p>
<p>【安卓软件推荐】动态企鹅桌面时钟是一款以一只可爱小企鹅为题材的桌面时钟！需要你在主屏幕按menu菜单键添加插件显示使用。它表情可爱，动作多多，你亦可连按小工具，它就会转换表情动作，另外还可以和小企鹅互动，喂它喝饮料，吃东西，还可以和小企鹅玩石头剪子布。</p>
</div>
<div id="pannel">
<div id="drag"></div>
</div>
</div><script type="text/javascript">
var o1 = document.getElementById('slider'),
o2 = document.getElementById('pannel'),
o3 = document.getElementById('drag');
function customBar(oSlider, oPanel, oTrigger){
this.parent = oSlider.parentNode;
this.slider = oSlider;
this.panel = oPanel;
this.trigger = oTrigger;
this.h1 = this.parent.clientHeight;
this.h2 = this.slider.offsetHeight;
this.h3 = this.panel.clientHeight;
this.h4 = this.trigger.offsetHeight;
this.k = (this.h2 - this.h1)/(this.h3 - this.h4);
this.dis = 0;
this.flag = false;
this.init();
}
customBar.prototype = {
init: function(){
if(this.k <= 0){
this.panel.style.display = 'none';
return;
}
this.slider.style.top = '0px';
this.trigger.style.top = '0px';
this.bind();
},
bind: function(){
var that = this;
this.trigger.onmousedown = function(e){
that.down.call(that, e);
}
this.trigger.onmousemove = document.onmousemove = function(e){
that.move.call(that, e);
}
this.trigger.onmouseup = document.onmouseup = function(e){
that.up.call(that, e);
}
},
down: function(e){
var e = window.event || e,
y1 = e.y || e.pageY,
y2 = parseInt(this.trigger.style.top);
this.dis = (y1 - y2);
this.flag = true;
this.move(e);
},
move: function(e){
if(!this.flag) return;
var e = window.event || e,
y1 = e.y || e.pageY,
dis;
dis = Math.min(Math.max(y1 - this.dis, 0), (this.h3 - this.h4));
this.slider.style.top = -dis * this.k + 'px';
this.trigger.style.top = dis + 'px';
},
up: function(){
this.flag = false;
},
wheel: function(){
}
}
var ss = new customBar(o1, o2, o3);
</script>
</body>
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