//标签切换

var nav = $('.index-nav');

var content = $('.index-nav-content li');

function hoverNav ($eleArr) {

    var $nav = $eleArr[0];

    var $content = $eleArr[1];

    $nav.on('mouseover', 'li', function(e) {

        e.preventDefault();

        var $this = $(this),

                number = $this.data('nav')-1;

        $this.addClass('cur').siblings('li').removeClass('cur');

        $content.eq(number).addClass('cur').siblings('li').removeClass('cur');

    });

}

hoverNav([nav,content]);