if(typeof PicFocusManager == "undefined")
{
PicFocusManager =[];
}
function PicFocus(imageContainerID,textContainerID,buttonContainerID,intervarTime){
this.$ = function (id){return document.getElementById(id)}
this.index = PicFocusManager.length;
PicFocusManager[PicFocusManager.length] = this;
this.imageContainer = this.$(imageContainerID);
this.textContainer = this.$(textContainerID);
this.buttonContainer = this.$(buttonContainerID);
this.firstShow = 0; //默认显示项
this.interval = (isNaN(intervarTime)?0:intervarTime) || 5000;
//切换时间
this.canAutoPlay = true; //是否可以自动切换
this.currentPosition = this.firstShow;
this.timer;
this.images = [];
this.texts = [];
this.buttons = [];
this.bindEvent = function(){
var _self = this;
for(var i=0;i<this.images.length;i++){
this.images[i].onmouseover = function(){
_self.stop();
}
this.images[i].onmouseout = function(){
_self.play();
}
}
for(var i=0;i<this.buttons.length;i++){
this.buttons[i].onclick = function(){
_self.focus(this);
}
}
}
this.play = function(){
if(this.canAutoPlay){
this.setFocus(this.currentPosition ++ )
if(this.currentPosition >= this.images.length)this.currentPosition =0 ;
this.timer = setTimeout('PicFocusManager[' + this.index + '].play()' , this.interval )
}
}
this.stop = function(){
clearTimeout( this.timer );
}
this.focus = function(button){
for(var i=0;i<this.buttons.length;i++){
if(this.buttons[i] == button){
this.currentPosition = i;
this.setFocus(this.currentPosition);
break;
}
}
}
this.setFocus = function(i){
try{
this.imageContainer.filters[0].apply();
this.imageContainer.filters[0].play();
}catch(e){}
for(var j=0;j<this.images.length;j++){
this.images[j].style.display = (i==j)?"":"none";
}
for(var j=0;j<this.texts.length;j++){
this.texts[j].style.display = (i==j)?"":"none";
}
for(var j=0;j<this.buttons.length;j++){
this.buttons[j].className = (i==j)? this.buttons[j].getAttribute("focusClass") :this.buttons[j].getAttribute("normalClass");
}
try{  //滤镜版本
new ActiveXObject("DXImageTransform.Microsoft.Fade");
this.imageContainer.filters[0].play();
}catch(e){}
}
this.init = function(){
if(this.imageContainer && this.imageContainer && this.imageContainer){
//init
this.images=this.imageContainer.getElementsByTagName("img");
this.texts=this.textContainer.getElementsByTagName("label");
this.buttons=this.buttonContainer.getElementsByTagName("a");
this.bindEvent();
for(var i=0;i<this.images.length;i++){
this.images[i].style.display = "none";
this.texts[i].style.display = "none";
this.buttons[i].className = this.buttons[i].getAttribute("normalClass");
}
this.images[this.firstShow].style.display = "";
this.texts[this.firstShow].style.display = "";
this.buttons[this.firstShow].className = this.buttons[this.firstShow].getAttribute("focusClass");
}else{
alert("未提供正确的参数")
}
}
}