The js implementation menu scrolls around to show the sample introduction


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
    <html xmlns="http://www.w3.org/1999/xhtml"
    <head
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
    <title>http://flytosky.qzone.qq.com</title
    <style type="text/css"
    *{font-family:" Microsoft jas black "; margin:0 auto; padding:0px;} 
    .zj_nei_l{ width:1150px; height:130px; margin-left:25px;} 
    .zj_nei_l li{ float:left; font-size:20px; color:#6f6f6f; text-align:center;margin:0px 5px; list-style:none;} 
    .show_box .left_box,.show_box .right_box{ 
        float:left; 
        height:130px; 
    } 
    .text_content p{ text-align:left; font-size:16px;  color:#fff; line-height:24px; padding:10px;} 
    .zj_nei_l li.show_box{ 
        width:98px; 
    } 
    .zj_nei_l li.show_box_hover{ 
        width:522px; 
    } 
    .show_box .right_box{ 
        display:none; 
        width:414px; 
        height:130px; 
        overflow:hidden; 
        margin-left: 10px; 
    } 
    .right_box .text_content{ 
        width:414px; 
        background-color:#339933
        color:#FFF
        height:130px; 
    } 
    .zj_nei_l .left_box{ 
        width:88px; 
        font-size:20px; 
    } 
    .zj_nei_l .left_box p{ 
        line-height:42px; 
        font-size:20px; 
    } 
    .zj_nei_l .img_box{ 
        width: 88px; 
        height:88px; 
    } 
    .show_box .item1{ 
        background:#030
    } 
    .show_box .item2{ 
        background:#300
    } 
    .show_box .item3{ 
        background:#600
    } 
    .show_box .item4{ 
        background:#6C0
    } 
    .show_box .item5{ 
        background:#6F9
    } 
    .show_box .item6{ 
        background:#3F9
    } 
    .show_box_hover .left_box{ 
        color:#339933
    } 
    .show_box_hover .item1{ 
        background:#0F9
    } 
    .show_box_hover .item2{ 
        background:#00C
    } 
    .show_box_hover .item3{ 
        background:#906
    } 
    .show_box_hover .item4{ 
        background:#9F6
    } 
    .show_box_hover .item5{ 
        background:#CF9
    } 
    .show_box_hover .item6{ 
        background:#90F
    } 
    </style
    <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"></script
    </head

    <body
        <div class="zj_nei_l"
          <ul
            <li class="show_box show_box_hover"
                <div class="left_box"
                    <div class="img_box item1"
                    </div
                    <p> To learn knowledge ></p
                </div
                <div class="right_box" style="display:block;"
                    <div class="text_content"
                        <p> Have a matter to please contact small white! Make friends with like-minded people </p
                        <p> Email address: [email protected]</p
                        <p>QQ : 879974693</p
                    </div
                </div
                <div class="clearboth"></div
            </li
            <li class="show_box"
                <div class="left_box"
                    <div class="img_box item2"></div
                    <p> Make friend, ></p
                </div
                <div class="right_box"
                    <div class="text_content"
                        <p> Have a matter to please contact small white! Make friends with like-minded people </p
                        <p> Email address: [email protected]</p
                        <p>QQ : 879974693</p
                    </div
                </div
                <div class="clearboth"></div
            </li
            <li class="show_box"
                <div class="left_box"
                    <div class="img_box item3"></div
                    <p> Can make money ></p
                </div
                <div class="right_box"
                    <div class="text_content"
                        <p> Have a matter to please contact small white! Make friends with like-minded people </p
                        <p> Email address: [email protected]</p
                        <p>QQ : 879974693</p
                    </div
                </div
                <div class="clearboth"></div
            </li
            <li class="zj_line"></li
            <li class="show_box"
                <div class="left_box"
                    <div class="img_box item4"></div
                    <p> Looking for a business ></p
                </div
                <div class="right_box"
                    <div class="text_content"
                        <p> Have a matter to please contact small white! Make friends with like-minded people </p
                        <p> Email address: [email protected]</p
                        <p>QQ : 879974693</p
                    </div
                </div
                <div class="clearboth"></div
            </li
            <li class="show_box"
                <div class="left_box"
                    <div class="img_box item5"></div
                    <p> Recruit talents ></p
                </div
                <div class="right_box"
                    <div class="text_content"
                        <p> Have a matter to please contact small white! Make friends with like-minded people </p
                        <p> Email address: [email protected]</p
                        <p>QQ : 879974693</p
                    </div
                </div
                <div class="clearboth"></div
            </li
            <li class="show_box"
                <div class="left_box"
                    <div class="img_box item6"></div
                    <p> Strives for the development ></p
                </div
                <div class="right_box"
                    <div class="text_content"
                        <p> Have a matter to please contact small white! Make friends with like-minded people </p
                        <p> Email address: [email protected]</p
                        <p>QQ : 879974693</p
                    </div
                </div
                <div class="clearboth"></div
            </li
          </ul
        </div

    <script type="text/javascript"
        var hide_boxw = $(".right_box").width(); 
        $(".show_box").mouseenter(function(e){ 
            var li = $(this).find(".right_box"); 
            $(this).addClass("show_box_hover"); 
            if(li.css("display")=="none"){ 
                $(".right_box").hide(); 
                $(".show_box").removeClass("show_box_hover"); 
                $(this).addClass("show_box_hover"); 
                li.css({"width":"0px","display":"block"}); 
                li.animate({"width":hide_boxw},hide_boxw); 
            } 
        }); 
    </script
    </body
    </html

Implementation effect