<form id="loginForm" method="post" action="">
<table id="loginareacenter" cellpadding="0" cellspacing="0" border="0">
<tr><th>用户名:</th><td><input type="text" id="username" name="username" value="" class="width200"/></td></tr>
<tr><th>密码:</th><td><input type="password" id ="password" name="password" value="" class="width200"/></td></tr>