var dd="items0";
var zhixing=true;
$(document).ready(function(){
/******左侧菜单 开始******/
$("dt").click(function(){
    if(!zhixing)return false;
    zhixing=false;
    var obj="items"+$("dt").index(this);
    //只允许一个打开
    for(var i=0;i<$("dd").length;i++)
    {
        if($("dd")[i].id!=obj)
        {
            $("#"+$("dd")[i].id).slideUp("slow");
        }   
    }
    if(dd==obj)
    {$("#"+obj).slideToggle("slow");zhixing=true;}
    else
    setTimeout(function(){$("#"+obj).slideToggle("slow");zhixing=true;},500);
    dd=obj;
});
/******左侧菜单 结束******/


/******返回顶部 开始******/
$('<a href="#top" id="gotop">返回顶部</a>').appendTo('body').hide();
    var $gotop = $('#gotop'); 
    function backTopLeft() 
    {
        var btLeft = $(window).width() / 2 + 485;
        if (btLeft <= 1000) { $gotop.css({ 'left': 965 }) } 
        else { $gotop.css({ 'left': btLeft }) } 
    } 
    backTopLeft();
    $(window).resize(backTopLeft); $(window).scroll(function() 
    {
        if ($(document).scrollTop() === 0) { $gotop.hide() } 
        else { $gotop.show() } 
        if ($.browser.msie && $.browser.version == 6.0 && $(document).scrollTop() !== 0) 
        { $gotop.css({ 'opacity': 1 }) } 
    }) 
    $('a[href*=#]').click(function() {
        if (location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') && location.hostname == this.hostname) {
            var $target = $(this.hash);
            $target = $target.length && $target || $('[name=' + this.hash.slice(1) + ']');
            if ($target.length) {
                var targetOffset = $target.offset().top;
                $('html,body').animate({
                    scrollTop: targetOffset
                },
                1000);
                return false;
            }
        }
    });
/******返回顶部 结束******/
});