(function(window){
	function l(){

	};
	l.tool={ 
			add :function(el, type, fn, capture) {
				if(!capture){capture=false;}
				if (el && el.addeventlistener) {
					el.addeventlistener(type, fn, capture);
				} else if (el && el.attachevent) {
					el.attachevent('on' + type, fn);
				}
			},
			remove :function(el, type, fn, capture) {
				////移除某个对象的某个类或者多个类，类与类之间用空格隔开
				if (el && el.removeeventlistener) {
				// this can throw an uncaught exception in ff
					try {
						el.removeeventlistener(type, fn, capture);
					} catch (ex) {}
				} else if (el && el.detachevent) {
					el.detachevent('on' + type, fn);
            	}
			},
			rmclassname:function(org,what){
				var arrwhat,arrclass;
				if(!org||!what){return org;}
				arrwhat=what.split(" ");
				arrclass=org.split(" ");
				if(arrclass.length==1&&arrclass[0]=="") return org;
				for(var j=0;j<arrwhat.length;j++){
					for(var i=0;i<arrclass.length;i++){
						if(arrclass[i]==arrwhat[j]) arrclass[i]="";
					} }
				var tempstr="";var num=arrclass.length-1;
				for(var m=0;m<=num;m++){
					if(m==num){ if(arrclass[m]!="") tempstr=tempstr+arrclass[m];}
					else if(arrclass[m]!="") tempstr=tempstr+arrclass[m]+" ";
				}
			
				return tempstr;
			},
			fillcon:function (idc,con,tag){
			   if(document.getelementbyid(idc))
				   if(tag){
						document.getelementbyid(idc).innerhtml+=con;
					}else{
						document.getelementbyid(idc).innerhtml=con;
					}
			 },
			addclassname :function(org,what){
				//给某个类添加新的类，可同时添加多个类，已经存在的则不再添加，
				var arrwhat,arrclass;
				if(!org){return what;}
				if(!what){return org;}
				arrwhat=what.split(" ");
				arrclass=org.split(" ");
				if(arrwhat.length==1&&arrwhat[0]==""){return org}
				if(arrclass.length==1&&arrclass[0]==""){
					org+=what;
				}else {
					for(var j=0;j<arrwhat.length;j++){
						var flag=0;
						for(var i=0;i<arrclass.length;i++){
							if(arrclass[i]==arrwhat[j]) {flag=1;break;}
						}
						if(flag==0&&arrwhat[j]!="")
						  org+=" "+arrwhat[j];
					}}
			
				return org;
			},
			getbyclass:function(object, tag, classname) {
				//getbyclass  查找某个对象下面 某个类为classname的对象数组
					var o = object.getelementsbytagname(tag);
					for ( var i = 0, n = o.length, ret = []; i < n; i++) {
						if(classname==''){ret.push(o[i]);continue;}
						var temparr=o[i].classname.split(" ");
						for(var j=0;j<temparr.length;j++){
							if (temparr[j]== classname) {ret.push(o[i]);break;}
						}
					}
					return ret;
			},
			stopbubble:function(e) {   
				if (e && e.stoppropagation && e.preventdefault) {// 非ie   
						e.stoppropagation();// 标准w3c的取消冒泡   
						e.preventdefault();// 取消默认行为   
				} else {   
						window.event.cancelbubble = true;// ie的取消冒泡方式   
						window.event.returnvalue = false;// ie的取消默认行为   
				}   
			},
			extend:function(org,tar){

				for(var i in tar){
					org[i]=tar[i];
				};
				return org;
			},
			createclippage:function(pagecount,curpage){
				var i  ,num ,bef ,aft ,flag ,flagpre ,flagaft ,href ;
				//num表示显示的数量
				//bef  表示curpage前的个数，最大为num-1
				num=8;href=[];flagpre=1;flagaft=4;bef=3;aft=num-3-bef;i=0;
				if(curpage-bef>1){flagpre=2;}
				if(curpage+aft+2<pagecount){flagaft=7;}
				flag=flagpre+flagaft;
				//核心部分 下面这部分
				href[href.length]=i;
				for(i=curpage-bef<1?1:curpage-bef;i<curpage+aft+2;i++){
					if(i>=pagecount) break;
					href[href.length]=i;
				}
				// 对后半部分进行修正，最后一位进行修正
				if(curpage+aft+2<pagecount){
					href[href.length-1]=(pagecount-1);
				}
				//end of 下面这部分
				href[href.length]=flag;
				href[href.length]=curpage;
				href[href.length]=pagecount;
				return href;
			}

		};
	window.l=l;
})(window);
	
/*
切换显示函数 示例用法：
var nav=l.tool.getbyclass(document.getelementbyid("nav"),"li",'n'),con=l.tool.getbyclass(document.getelementbyid("con"),"div",'c');
taberfun(nav,con,{
		on:"current",
  		eventtype:"click"
  	});
*/
function taberfun(nav,con,option){
	/*
		param - on : 当前显示导航的classname;
		param - out: 不是当前导航的classname;
		param - eventtype: 导航触发事件
		start:内容切换前的处理
		complete:内容切换后的处理
	*/
	var defaults={
		on:"current",
		out:"",
		startindex:0,
		eventtype:"click",
		start:function(){},
		complete:function(){},
		preventbubble:true
	};
	option=l.tool.extend(defaults,option);
	for(var i=0;i<nav.length;i++){
		nav[i].classname=l.tool.addclassname(l.tool.rmclassname(nav[i].classname,option.on),option.out);
		con[i].style.display="none";
		(function(index){
			l.tool.add(nav[index],option.eventtype,function(e){
				var _this=nav[index];
				option.start(index);
				for(var j=0;j<nav.length;j++){
					nav[j].classname=l.tool.addclassname(l.tool.rmclassname(nav[j].classname,option.on),option.out);
					con[j].style.display="none";
					_this.classname=l.tool.addclassname(l.tool.rmclassname(_this.classname,option.out),option.on);
					con[index].style.display="block";
				}
				option.complete(index);
				if(option.preventbubble){
					l.tool.stopbubble(e);
				}
			});
		})(i);
	}
	nav[option.startindex].classname=l.tool.addclassname(l.tool.rmclassname(nav[option.startindex].classname,option.out),option.on);
	con[option.startindex].style.display="block";
};