function getCookie(c_name)
{
    if (document.cookie.length>0){
        c_start=document.cookie.indexOf(c_name + "=");
        if (c_start!=-1){ 
            c_start=c_start + c_name.length+1;
            c_end=document.cookie.indexOf(";",c_start);
            if (c_end==-1) c_end=document.cookie.length;
            return unescape(document.cookie.substring(c_start,c_end));
        } 
    }
    return "";
}

var username = getCookie("username");

if(username.length>0){
    document.write('欢迎会员 '+username+' | <a href="http://www.ddsk.org/modules/article/bookcase.php">我的书架</a> | <a href="http://www.ddsk.org/logout.php">退出登录</a>');
}else{
    document.write('<form name="framelogin" method="post" action="http://www.ddsk.org/login.php">');
    document.write('用户名：<input name="LoginForm[username]" type="text" class="text" onkeypress="javascript: if (event.keyCode==32) return false;" value="" size="10" maxlength="30" />密码：<input type="password" class="text" size="10" maxlength="30" name="LoginForm[password]" />');
    document.write('<select name="usecookie" class="select"><option value="0">浏览器进程</option><option value="86400">保存一天</option><option value="2592000">保存一月</option><option value="315360000">保存一年</option></select><input type="hidden" name="action" value="login" />');
    document.write('<input type="submit" class="button" value="&nbsp;登录&nbsp;" name="submit" /><a href="http://www.ddsk.org/register.php" target="_top">注册</a></form>');
}