// JavaScript Document
function Pid(id,tag){
	if(!tag){
		return document.getElementById(id);
		}
	else{
		return document.getElementById(id).getElementsByTagName(tag);
		}
}

function tab(id,hx,box,iClass,s,pr){
	var hxs=Pid(id,hx);
	var boxs=Pid(id,box);
	if(!iClass){ // 如果不指定class，则�?
		boxsClass=boxs; // 直接使用box作为容器
	}
	else{ // 如果指定class，则�?
		var boxsClass = [];
		for(i=0;i<boxs.length;i++){
			if(boxs[i].className.match(/\btab\b/)){// 判断容器的class是否匹配
				boxsClass.push(boxs[i]);
			}
		}
	}
	if(!pr){ // 如果不指定预展开容器，则�?
		go_to(0); // 默认展开序列
		yy();
	}
	else {
		go_to(pr);
		yy();
	}
	function yy(){
		for(var i=0;i<hxs.length;i++){
			hxs[i].temp=i;
			if(!s){// 如果不指定事件，则：
				s="onmouseover"; // 使用默认事件
				hxs[i][s]=function(){
					go_to(this.temp);
				}
			}
			else{
				hxs[i][s]=function(){
					go_to(this.temp);
				}
			}
		}
	}
	function go_to(pr){
		for(var i=0;i<hxs.length;i++){
			if(!hxs[i].tmpClass){
				hxs[i].tmpClass=hxs[i].className+=" lengyun";
				boxsClass[i].tmpClass=boxsClass[i].className+=" lengyun";
			}
			if(pr==i){
				hxs[i].className+=" up"; // 展开状态：标题
				boxsClass[i].className+=" up"; // 展开状态：容器
			}
			else {
				hxs[i].className=hxs[i].tmpClass;
				boxsClass[i].className=boxsClass[i].tmpClass;
			}
		}
	}
}

function mar(obj){
	this.left = this.get(obj+'_left');
	this.right = this.get(obj+'_right');
	this.content = this.get(obj+'_content');
	if(!this.left || !this.right || !this.content){
		alert('缺少对象');
		return false;
	}
	this.left['instance'] = this.right['instance'] = this;
	this.left['direction'] = 5;
	this.right['direction'] = -5;
	this.left.onmouseover = this.right.onmouseover = this.move;
	this.left.onmouseout = this.right.onmouseout = this.stop;
	this.inter = null;
}
mar.prototype = {
	get: function(o){return document.getElementById(o);},
	move: function(){
		var _this = this;
		this['instance'].inter = setInterval(function(){
			_this['instance'].content.scrollLeft += _this['direction'];
		}, 2);
	},
	stop: function(){
		window.clearInterval(this['instance'].inter);
	}
}