修改 \templets\default\article_article.htm 将以下代码        用户名：<input name="username" class="username" type="text" maxlength="20" value="guest" onmouseover="this.select();" onclick="if(this.value==’guest’){this.value=”}"/>        密码：<input name="pwd" class="password" type="password" maxlength="20" value="guest" onmouseover="this.select();" onclick="if(this.value==’guest’){this.value=”}"/>