兼容各种浏览器的上下滚动代码_html/css

红色的表示为要注意统一的。

蓝色是表示要更改的。

内容高度一定要大于box1的高度否则不会滚动，本框架用的是phpcms,大家可根据自己的框架更改循环。

演示地址http://www.er-china.com/index.php?m=content&c=index&a=lists&catid=789

var Class = {
create: function() {
return function() {
this.initialize.apply(this, arguments);
}
}
}

Object.extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];
}
return destination;
}

function addEventHandler(oTarget, sEventType, fnHandler) {
if (oTarget.addEventListener) {
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) {
oTarget.attachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = fnHandler;
}
};

var Scroller = Class.create();
Scroller.prototype = {
initialize: function(idScroller, idScrollMid, options) {
var oThis = this, oScroller = $1(idScroller), oScrollMid = $1(idScrollMid);

this.SetOptions(options);
this.Side = this.options.Side || ["up"];//方向
this.scroller = oScroller; //对象
this.speed = this.options.Speed; //速度
this.timer = null; //时间
this.pauseHeight = 0; //定高
this.pauseWidth = 0; //定宽
this.pause = 0; //定高(宽)
this.side = 0; //参数

//用于上下滚动
this.heightScroller = parseInt(oScroller.style.height) || oScroller.offsetHeight;
this.heightList = oScrollMid.offsetHeight;



//js取不到css设置的height和width

oScroller.style.overflow = "hidden";
oScrollMid.appendChild(oScrollMid.cloneNode(true));
oScrollMid.appendChild(oScrollMid.cloneNode(true));

addEventHandler(oScroller, "mouseover", function() { oThis.Stop(); });
addEventHandler(oScroller, "mouseout", function() { oThis.Start(); });

this.Start();
},
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
Step: 1,//每次变化的px量
Speed: 20,//速度(越大越慢)
Side: ["up"],//滚动方向:"up"是上，"down"是下，"left"是左，"right"是右
PauseHeight: 0,//隔多高停一次
PauseWidth: 0,//隔多宽停一次
//当上下和左右一起使用时必须设置PauseHeight和PauseWidth来设置转向位置
PauseStep: 0//停顿时间(PauseHeight或PauseWidth大于0该参数才有效)
};
Object.extend(this.options, options || {});
},
//转向
Turn: function() {
//通过设置方向数组的排列来转向
this.Side.push(this.Side.shift().toLowerCase());
},
//上下滚动
ScrollUpDown: function() {
this.pause = this.pauseHeight;
this.scroller.scrollTop = this.GetScroll(this.scroller.scrollTop, this.heightScroller, this.heightList, this.options.PauseHeight);
this.pauseHeight = this.pause;

var oThis = this;
this.timer = window.setTimeout(function(){ oThis.Start(); }, this.speed);
},

//获取设置滚动数据
GetScroll: function(iScroll, iScroller, iList, iPause) {
var iStep = this.options.Step * this.side;

if(this.side > 0){
if(iScroll >= (iList * 2 - iScroller)){ iScroll -= iList; }
} else {
if(iScroll <= 0){ iScroll += iList; }
}

this.speed = this.options.Speed;
if(iPause > 0){
if(Math.abs(this.pause) >= iPause){
this.speed = this.options.PauseStep; this.pause = iStep = 0; this.Turn();
} else {
this.pause += iStep;
}
}

return (iScroll + iStep);
},
//开始
Start: function() {
//方向设置
switch (this.Side[0].toLowerCase()) {

case "down" :
if(this.heightList < this.heightScroller) return;
this.side = -1;
this.ScrollUpDown();
break;
case "up" :
default :
if(this.heightList < this.heightScroller) return;
this.side = 1;
this.ScrollUpDown();
}
},
//停止
Stop: function() {
clearTimeout(this.timer);
}
};

window.onload = function(){
new Scroller("zsbox", "box1",{ Side:["up","left"], PauseHeight:50, PauseWidth:400 });
}

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