PHP Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting

PHP Parse error:  syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in (红色部分) 这是什么意思啊
$form_body = <<<EOD  <div id="rgt">
      <a href="#" class="regBtn">注册账号</a>
        <div class="login">
          <form name="lzform" method="post" action="">
           <div class="cRed fB alignC" style="display:none">错误</div>
              <p>
                <em>账号：</em>
                <input type="text"  id="email_reg" class="ipt" name="email" value=""  />
                
              </p>
              
              <p>
                <em>密码：</em>
                <input type="password"  id="password_reg" class="ipt" maxlength="20" name="password" />
             </p>
             
            <p id="validate_code">
                <em style="display:inline">验证码：</em>
              <input type="text"  id="validate" class="ipt" maxlength="4" name="validate" value=""  style="width:42px;" />
<img src="<?php echo $vars['url']; ?>mod/xiao_theme_default/images/topimg.png" width="80" height="28px" align="absmiddle" style="cursor: pointer"/>              </p>
              <p style="height:22px;padding:8px 0">
               <span class="lft">
                 <input type="checkbox" name="checkbox" id="checkbox">
               保持登录状态</span><a href="#" class="rgt cBlue">忘记密码？</a>
              </p>
              <p class="alignC">
                  <input type="submit" name="button" id="button" class="orgBtn" value="" />
              </p>
          </form>
      </div>
  </div>EOD;