function text(el){
var node = (typeof el == "string")? document.getElementById(el) : el;
var i = 0;
var repeat = function(){
setTimeout(function(){
node.innerHTML = "

"+i+"

";
i++;
if(i <= 100){
setTimeout(arguments.callee, 100);
}
},100)
}
repeat();
}

function fadeIn(el){
var node = (typeof el == "string")? document.getElementById(el) : el;
var i = 0;
var fade = function(){
setTimeout(function(){
!+"\v1"? (node.style.filter="alpha(opacity="+i+")"): (node.style.opacity = i / 100);
i++;
if(i <= 100){
setTimeout(arguments.callee, 100);
}
},100)
}
fade();
}

function opacity(el){
//必选参数
var node = (typeof el == "string")? document.getElementById(el) : el,
//可选参数
optiOns= arguments[1] || {},
//变化的持续时间
duration = options.duration || 1.0,
//开始时透明度
from = options.from || 0.0 ,
//结束时透明度
to = options.to || 0.5,
operation = 1,
init = 0;
if(to - from <0){
operation = -1,
init = 1;
}
//内部参数
//setTimeout执行的间隔时间，单位毫秒
var frequency = 100,
//设算重复调用的次数
count = duration * 1000 / frequency,
// 设算每次透明度的递增量
detal = Math.abs(to - from) /count,
// 正在进行的次数
i = 0;
var main = function(){
setTimeout(function(){
if(!+"\v1"){
if(node.currentStyle.hasLayout) node.style.zoom = 1;//防止滤镜失效
node.style.filter="alpha(opacity="+ (init * 100 + operation * detal * i * 100).toFixed(1) +")"
}else{
node.style.opacity = (init + operation * detal * i).toFixed(3)
}
node.innerHTML = (init + operation * detal * i).toFixed(3)
i++;
if(i <= count){
setTimeout(arguments.callee, frequency);
}
},frequency)
}
main();
}

function opacity(el){
//必选参数
var node = (typeof el == "string")? document.getElementById(el) : el,
//可选参数
optiOns= arguments[1] || {},
//变化的持续时间
duration = options.duration || 1.0,
//开始时透明度
from = options.from || 0.0 ,
//结束时透明度
to = (options.to && options.to + "") || 0.5,
operation = -1,
init = 1;
if(to - from <0){
operation = 1,
init = 0;
}
//内部参数
//setTimeout执行的时间，单位
var frequency = 100,
//设算重复调用的次数
count = duration * 1000 / frequency,
// 设算每次透明度的递增量
detal = operation * Math.abs(to - from) /count;
var main = function(){
setTimeout(function(){
if(!+"\v1"){
if(node.currentStyle.hasLayout) node.style.zoom = 1;//防止滤镜失效
node.style.filter="alpha(opacity="+ (init * 100 + detal * count * 100).toFixed(1) +")"
}else{
node.style.opacity = (init + detal * count).toFixed(3)
}
count--;
if(count + 1){
setTimeout(arguments.callee, frequency);
}
},frequency)
}
main();
}

function Opacity(el){
var node = (typeof el == "string")? document.getElementById(el) : el,
optiOns= arguments[1] || {},
duration = options.duration || 1.0,
from = options.from || 0.0 ,
to = (options.to && options.to + "") || 0.5,
operation = -1,
init = 1;
if(to - from <0){
operation = 1,
init = 0;
}
var frequency = 100,
count = duration * 1000 / frequency,
detal = operation * Math.abs(to - from) /count;
this.main(node,init,detal,count,frequency);
}
Opacity.prototype = {
main : function(node,init,detal,count,frequency){
setTimeout(function(){
if(!+"\v1"){
if(node.currentStyle.hasLayout) node.style.zoom = 1;//防止滤镜失效
node.style.filter="alpha(opacity="+ (init * 100 + detal * count * 100).toFixed(1) +")"
}else{
node.style.opacity = (init + detal * count).toFixed(3)
}
node.innerHTML = (init + detal * count).toFixed(3)
count--;
if(count + 1){
setTimeout(arguments.callee, frequency);
}
},frequency)
}
}