//�ö�ͼ����ʾ
$('#top-back').hide()
$(window).scroll(function(){
	 if($(this).scrolltop() > 550){
		$("#top-back").fadein();
	 }
	 else{
		$("#top-back").fadeout();
	 }
  })	
//�ö��¼�
function topback(){
  $('body,html').animate({scrolltop:0},300);
}


//javascript document
function chinaz(){
	this.init();
}
chinaz.prototype = {
	constructor: chinaz,
	init: function(){		
		this._initbacktop();
	},	
	_initbacktop: function(){
		var $backtop = this.$backtop = $('<div class="cbbfixed" id="top-back">'+
						'<div class="gotop7 cbbtn"">'+
							'<a href="/?zhaopin/"><span class="weixin-icon7"></span></a>'+
							'<div><span class="zhaopinxia"><img src="/template/jigang/images/z1.jpg"><a href="/?zhaopin/123.html">\u6d4e\u6e90\u94a2\u94c1\u957f\u671f\u62db\u8058\u516c\u544a</a>&nbsp;<img src="/template/jigang/images/zhot.jpg"></span><br>'+
							'<span class="zhaopinxia"><img src="/template/jigang/images/z2.jpg"><a href="/?zhaopin/122.html">\u56fd\u6cf0\u5fae\u7c89\u62db\u8058\u516c\u544a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</a><img src="/template/jigang/images/zhot.jpg"></span><br><span class="zhaopinxia"><img src="/template/jigang/images/z3.jpg"><a href="/?zhaopin/121.html">\u6d4e\u94a2\u88c5\u5378\u516c\u53f8\u62db\u8058\u516c\u544a</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span></div>'+
						'</div>'+
						'<a href="/?xinwen/" class="gotop1 cbbtn"">'+
							'<span class="weixin-icon1"></span><div></div>'+
						'</a>'+
						'<a href="/?jieshao/" class="gotop2 cbbtn"">'+
							'<span class="weixin-icon2"></span><div></div>'+
						'</a>'+
						'<a href="/?lianxi/" class="gotop3 cbbtn"">'+
							'<span class="weixin-icon3"></span><div></div>'+
						'</a>'+
						'<a class="cweixin cbbtn"">'+
							'<span class="weixin-icon"></span><div></div>'+
						'</a>'+
						'<a class="gotop cbbtn">'+
							'<span class="up-icon"></span>'+
						'</a>'+
					'</div>');
		$('body').append($backtop);
		
		$backtop.click(function(){
			$("html, body").animate({
				scrolltop: 0
			}, 1200);
		});

	}
	
}
var chinaz = new chinaz();