为什么?
<html>
<body>
<%session.setAttribute( "username ",session.getAttribute( "username "));%>
<form method= "post " action= "booksend.jsp ">
<table width= "638 " height= "314 " border= "0 " align= "center " cellpadding= "0 " cellspacing= "0 ">
<!--DWLayoutTable-->
<tr>
<td width= "612 " height= "159 " valign= "top " background= "images/show.gif " class= "word "> <p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<blockquote>
<p align= "left "> 1�� ������ı����ͼ��������һ�ࣿ </p>
<p align= "left ">
<input name= "type " type= "checkbox " value= "kaifa " >
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<input name= "type " type= "checkbox " value= "baili ">
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<input name= "type " type= "checkbox " value= "jiqiao ">
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<input name= "type " type= "checkbox " value= "shili ">
ʵ���
<input name= "type " type= "checkbox " value= "jiaocheng ">
�̳� </p>
<p align= "left "> 2�� ��ʹ���������ֱ�����Ի򹤾�? </p>
<p align= "left ">
<input name= "type2 " type= "checkbox " value= "VB " >
VB