include_once的时候出现莫名其妙的回车换行

纯粹的include一个页面 结果莫名其妙的出现回车换行了<? include_once("right.php");?>right.php文件如下<div class="right">
<h2>
<div class="ftl"></div>
<cite>栏目导航</cite>
</h2>
<div class="fm userDefine" style="height:96px">
<a class=fm_a href='/unit/list.php?type=0'>aaa</a><a class=fm_a href='/unit/list.php?type=1'>bbb</a><a class=fm_a href='/unit/list.php?type=3'>ccc</a>
</div>
<div class="fe"><div class="fel"></div></div> <ul class="tabA tabB">
<h2>
<div class="ftl"></div>
<span></span>
<cite>会员登录</cite>
</h2>
</ul>
<div class="fm loginBox">
<? if($_SESSION['theuser']!=null){echo $_SESSION["theuser"].'，您好!欢迎登录.<br><a href="edit.php">进入个人中心</a><br>若要退出，请选择<a href="exit.php">注销</a>';

}else{?>
<form action="verify.php" method="post">
<p>用户名：</p><input type="text" name="username" class="in" maxlength="12">
<p>密  码：</p><input type="password" name="pwd" class="in" maxlength="16">
<p>验证码:</p>
<input type="text" name="yanzheng" class="in" style="width:80px;" maxlength="4">
<img src="../include/code.php" alt="点击刷新验证码" class="code" onclick="this.src+='?' + Math.random();" />
<input type="submit" name="sub" value="登录" class="sub">
</form>
<?}?>
</div>
<div class="fe"><div class="fel"></div></div>
</div>