@model string
@{
    string src = "";
    string href = "";
    if (Model == "ZX")
    {
        src = "zx-logo.png";
        href = "http://zx.55128.cn/ ";
    }
    if (Model == "KJ")
    {
        src = "kj-logo.jpg";
        href = "http://kjh.55128.cn/";
    }
    if (Model == "TK")
    {
        src = "tk-logo.png";
        href = "http://tk.55128.cn/index.htm";
    }
    if (Model == "SS" || Model == "ZS")
    {
        src = "zs-logo.png";
        href = "http://www.55128.cn/";
    }
}
<header class="border-1px-bottom">
    <div class="header-left">
        <img src="~/Content/img/@src" />
    </div>
    <div class="header-right">
        <a href="/kjh/index" class="hearder-right-item">
            <span class="item-lable">开机号</span>
        </a> <!----> <!---->
        <a href="/sjh/index" class="hearder-right-item">
            <span class="item-lable">试机号</span>
        </a> <!----> <!----><!---->
        <a href="/zlxq/fc3d/i=cstzm.html" class="hearder-right-item">
            <span class="item-lable">彩神通</span>
        </a> <!----><!----> <!---->
        <a href="http://m.55128.cn/index.aspx" class="hearder-right-item">
            <span class="item-lable hdjb">旧版</span>
        </a>
        <a href=@href class="hearder-right-item">
            <span class="item-lable hdjb">电脑版</span>
        </a>
    </div>
</header>