$(function(){
			var focusbanner=function(){
				var $focusbanner=$("#focus-banner"),
					$bannerlist=$("#focus-banner-list li"),
					$focushandle=$(".focus-handle"),
					$bannerimg=$(".focus-banner-img"),
					$nextbnt=$("#next-img"),
					$prevbnt=$("#prev-img"),
					$focusbubble=$("#focus-bubble"),
					bannerlength=$bannerlist.length,
					_index=0,
					_timer="";

					var _height=$(".focus-banner-img").find("img").height();
					$focusbanner.height(_height);
					$bannerimg.height(_height);

					for(var i=0; i<bannerlength; i++){
						$bannerlist.eq(i).css("zindex",bannerlength-i);
						$focusbubble.append('<li><a href="javascript:;">'+i+'</a></li>');
					}
					$focusbubble.find("li").eq(0).addclass("current");
					var bubblelength=$focusbubble.find("li").length;
					$focusbubble.css({
						"width":bubblelength*22,
						"marginleft":-bubblelength*11
					});//初始化

					$focusbubble.on("click","li",function(){
						$(this).addclass("current").siblings().removeclass("current");
						_index=$(this).index();
						changeimg(_index);
					});//点击轮换

					$prevbnt.on("click",function(){
						_index++
						if(_index>bannerlength-1){
							_index=0;
						}
						changeimg(_index);
					});//下一张

					$nextbnt.on("click",function(){
						_index--
						if(_index<0){
							_index=bannerlength-1;
						}
						changeimg(_index);
					});//上一张

					function changeimg(_index){
						$bannerlist.eq(_index).fadein(250);
						$bannerlist.eq(_index).siblings().fadeout(200);
						$focusbubble.find("li").removeclass("current");
						$focusbubble.find("li").eq(_index).addclass("current");
						clearinterval(_timer);
						_timer=setinterval(function(){$nextbnt.click()},5000)
					}//切换主函数
					_timer=setinterval(function(){$nextbnt.click()},5000);


					function isie() { //ie?
						if (!!window.activexobject || "activexobject" in window)
						return true;
						else
						return false;
					}

					if(!isie()){
						$(window).resize(function(){ 	
							window.location.reload();
						});
					}else{
						if(!+'\v1' && !'1'[0]){ 
							alert("老铁什么年代啦还在搞ie8以下版本啊！")
						} else{
							$(window).resize(function(){ 	
								window.location.reload();
							});
						};
					}
					
			}();	
		})