我的页面每次访问的时候，为什么js中的function都自动运行啊？我也没点onclick按钮啊？
<%@ page language="java" import="java.util.*,model.*"
pageEncoding="gb2312"%>
<script type="text/javascript">
function substart(){
var b='<%WorkModel.getInstance().addstart(1)%>';
if(b='true'){
window.location.href("MyJsp.jsp");
}else{
window.status="your have clicked a button!"
}
//window.location.href("MyJsp.jsp");
}
function subend(){
var b1='<%WorkModel.getInstance().addend(1)%>';
if(b1='true'){
window.location.href("MyJsp.jsp");
}else{
window.status="your have clicked a button!"
}
}
<%String starttime = TimeModel.getInstance().selstart();
String endtime = TimeModel.getInstance().selend();
String start = TimeModel.getInstance().starttime("1");
String end = TimeModel.getInstance().endtime("1");
String id = request.getParameter("name");
session.setAttribute("id", id);
%>
</script>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
<link href="tab.css" type="text/css" rel="stylesheet">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body id="design">
<form action="Work.do" name="WorkFrom">
<ul id="tabnav">
<li class="上下班登记">
<a href="MyJsp.jsp">上下班登记</a>
</li>
<li class="外出登记">
<a href="go.jsp">外出登记</a>
</li>
<li class="请假登记">
<a href="holiday.jsp">请假登记</a>
</li>
<li class="出差登记">
<a href="travel.jsp">出差登记</a>
</li>
<li class="考勤查看">
<a href="Attendance.jsp">考勤查看</a>
</li>
</ul>
<div id="content">
<table border="2" cellpadding="2" cellspacing="2" bgcolor="#eeeeee">
<tr>
<th>
登记次数
</th>
<th>
登记类型
</th>
<th>
规定时间
</th>
<th>
登记时间
</th>
<th>
登记
</th>
</tr>
<tr>
<th>
1
</th>
<td>
上班
</td>
<td>
<%=starttime%>
</td>
<td>
<%=start%>
</td>
<td>
<input type=button value="登记" onclick="substart()">
</td>
</tr>
<tr>
<th>
2
</th>
<td>
下班
</td>
<td>
<%=endtime%>
</td>
<td>
<%=end%>
</td>
<td>
<input type=button value="登记" onclick="subend();">
</td>
</tr>
</table>
</div>
</form>
</body>
</html>