jsp + html: only this jsp javascript code is not working

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1" import="java.sql.*;"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="/struts-tags" prefix="s" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Home</title>
</head>
<script type="text/javascript">
	function defaultfn(){
		var x=document.getElementById('task');
        x.disabled=true;
        var y=document.getElementById('category');
        y.disabled=true;
	}
	function enabledorpdown(){
		var a = document.getElementsByName('cb');
		var x=0;
		for(var i=0; i<a.length; i++){
			if(a[i].checked){
				x=1;	
		        break;
			}
		}
		if(x==1){
			var x=document.getElementById('task');
	        x.disabled=false;
	        var y=document.getElementById('category');
	        y.disabled=false;
	        return true;
		}else{
			var x=document.getElementById('task');
	        x.disabled=true;
	        var y=document.getElementById('category');
	        y.disabled=true;
	        alert('please select record');
	        return true;
		}
		return false;
	}
	function gofunction(){
			var x = document.getElementById('status').value;
			if(x!="select"){
				window.location = "showData1.jsp?status="x;							
			}else{
				alert('please select status');
			}
	}
	
</script>

font-size:15px;
font-style:bold;
}
div.usertype{
padding-left: 0;
background-color: skyblue;
width: 150px ;
height: 50px;
text-align: center; 
padding-top: 30px;
border: 1;
border-style: solid;
border-color: pink

}
div.usertype:hover{
font-size:20px;
font-family:sans-serif;
font-type:bold;
border:2;
border-style: inset;
border-color: blue;
}
a.link2:hover {
padding-left:5px;
text-indent:1em;
font-color: blue ;
background:#fff url(http://www.example.com/myblog/images/x_ico.gif) no-repeat left center;

font-size:20px;
font-style:bold;
}
.error{
background:#fff
}

</style>
<body onLoad="defaultfn();">
	<table border="1" width="100%" height="600px"> 
		<tr>
			<td height="100px" width=100%>
				<table border=1 width=100% height="100px">
					<tr>
						<td width=15%></td>
						<td width=70%>
							<table border=1 width=100% height=100px  cellspacing="0px">
								<tr>
									<td width=20%>
									</td>
									<td class="welcome" width=60% align="right">
										<% if(null!=session.getAttribute("username")){ %>
										<a href="logout.action">Logout</a> Welcome, <%= session.getAttribute("username").toString() %>
										<%}else{ response.sendRedirect("default.jsp");} %>
									</td>
									<td width=20% align="center" >
										<table height=100px>
											<tr height=50px>
												<td>
												</td>
											</tr>
											<tr>
												<td height=30px>
												</td>
											</tr>
											<tr>
												<td height=20px>
										
												<a href="http://localhost:8080/struts28/adminSearchRecord.jsp">Home</a>       
												<a href="#">Setting</a></td>
											</tr>
										</table>
									</td>
								</tr>
							</table>
						</td>
						<td width=15%>
						</td>
					</tr>
				</table>
			</td>
		</tr>
		<tr>
		<%
			Class.forName("com.mysql.jdbc.Driver");
			Connection con = DriverManager.getConnection("jdbc:mysql://localhost/main_db","root","dhaval");
			Statement st = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
			String qry="";
		%>
			<td width="100%" align="center">				
				<table border=1 width=100%>				
					<tr>
						<td width="15%">
						</td>
						<td width="70%" align="center" height="400px">
							<div align="left" style="margin-left: 100px">
								<select id="task" style="">
									<option value="select">-select-</option>
									<option value="move">move to</option>
									<option value="copy">copy to</option>
								</select>
								<select id="category">
									<option value="select">-select-</option>
									<option value="student">Student</option>
									<option value="hod">HOD</option>
									<option value="professor">Professor</option>
								</select>
								<input type="button" value="done" onclick=""></input>
								
							</div>
							
							<div align="left" style="margin-left: 690px;margin-top: -26px">
								Status Type:
								<select id="status" style="">
									<option value="select">-select-</option>
									<option value="active">Active</option>
									<option value="inactive">Inactive</option>
								</select>
								<input type="button" value="Go" onclick="gofunction();"></input>
							</div>
							
							<table border=1 width="80%">
							<%
								if(request.getParameter("usertype").equals("viewall")){
									qry = "select * from userdataviewlabelviewall";
									ResultSet label_rs = st.executeQuery(qry);
									ResultSetMetaData rsmd = label_rs.getMetaData();
									int colcount = rsmd.getColumnCount();
									label_rs.next();
									int i = 1;
							%>
								<tr>
									<td></td>
									<%while(i<=colcount){ %>
									<td>
										<b> <%= label_rs.getString(i) %></b>
									</td>
									
									<%i++;} 
								
									label_rs.close();
									%>
								</tr>
								<%}else if(request.getParameter("usertype").equals("student")){
									qry = "select * from userdataviewlabelstudent";
									ResultSet label_rs = st.executeQuery(qry);
									ResultSetMetaData rsmd = label_rs.getMetaData();
									int colcount = rsmd.getColumnCount();
									label_rs.next();
									int i = 1;
								%>	
								
									<tr>
									<td></td>
										<%while(i<colcount){ %>
										<td>
											<b> <%= label_rs.getString(i) %></b>
										</td>
										<%i++;}	label_rs.close();%>
									</tr>
								<%}else if(request.getParameter("usertype").equals("hod")){
									qry = "select * from userdataviewlabelhod";
									ResultSet label_rs = st.executeQuery(qry);
									ResultSetMetaData rsmd = label_rs.getMetaData();
									int colcount = rsmd.getColumnCount();
									label_rs.next();
									int i = 1;
								%>	
								
									<tr>
									<td></td>
										<%while(i<colcount){ %>
										<td>
											<b> <%= label_rs.getString(i) %></b>
										</td>
										<%i++;}	label_rs.close();%>
									</tr>	
								<%}else if(request.getParameter("usertype").equals("professor")){
									qry = "select * from userdataviewlabelprofessor";
									ResultSet label_rs = st.executeQuery(qry);
									ResultSetMetaData rsmd = label_rs.getMetaData();
									int colcount = rsmd.getColumnCount();
									label_rs.next();
									int i = 1;
								%>	
								
									<tr>
									<td></td>
										<%while(i<colcount){ %>
										<td>
											<b> <%= label_rs.getString(i) %></b>
										</td>
										<%i++;}	label_rs.close();%>
									</tr>
									
								
								<%}%>
								
							<% if(request.getParameter("usertype").toString().equals("viewall")){
									System.out.println(request.getParameter("usertype").toString());
									session.setAttribute("usertype1",request.getParameter("usertype").toString());		
									System.out.println(session.getAttribute("usertype1"));
									qry = "select * from userdataviewall";
									ResultSet rs = st.executeQuery(qry);
									ResultSetMetaData rsmddata = rs.getMetaData();									
									int colcount1 = rsmddata.getColumnCount();
									System.out.println("colcoutn"+colcount1);
							%>
									<% 
										while(rs.next()){ System.out.println("in begining");
										int i1=1;
									%>
										<tr>
											<td>
												<input  onChange="enabledorpdown();" name="cb" type="checkbox" id="<%=rs.getString("username")%>" value="<%=rs.getString("username")%>"></input>
											</td>
											<% while(i1<=colcount1){ 
											System.out.println(i1);%>
												
												<td>
													<% if(rs.getString(i1).toString().equals("true")||rs.getString(i1).toString().equals("false")){ %>
													<%		if(rs.getString(i1).toString().equals("false")){
													%>		
															<img alt="" src="false.png">										
															<%}else{%>
															<img alt="" src="yes.png">
															<%}%>
															
													<%}else{ %>
														<%= rs.getString(i1) %>
													<%} %>
												</td>
											<%i1++; } %>
										</tr>
									<%}%>
							<%}else if(request.getParameter("usertype").toString().equals("student")){
									qry = "select * from userdataviewstudent";
									ResultSet rs = st.executeQuery(qry);
									ResultSetMetaData rsmddata = rs.getMetaData();									
									int colcount1 = rsmddata.getColumnCount();
									System.out.println("colcoutn"+colcount1);
							%>
									<% 
										while(rs.next()){ System.out.println("in begining");
										int i1=1;
										
									%>
										<tr>
											<td>
											<input name="cb" type="checkbox" onclick="enabledropdown();" id="<%=rs.getString("username")%>" value="<%=rs.getString("username")%>"></input>
											</td>
											<% while(i1<colcount1){ 
											System.out.println(i1);%>
												<td>
													<%= rs.getString(i1)%>
												</td>
											<%i1++; } %>
										</tr>
									<%}%>
							
							<%}else if(request.getParameter("usertype").toString().equals("hod")){
								qry = "select * from userdataviewhod";
								ResultSet rs = st.executeQuery(qry);
								ResultSetMetaData rsmddata = rs.getMetaData();									
								int colcount1 = rsmddata.getColumnCount();
								System.out.println("colcoutn"+colcount1);
						%>
								<% 
									while(rs.next()){ System.out.println("in begining");
									int i1=1;
								%>
									<tr>
										<td>
											<input name="cb" onclick="enabledropdown();"  type="checkbox" id="<%=rs.getString("username")%>" value="<%=rs.getString("username")%>"></input>
										</td>
										<% while(i1<colcount1){ 
										System.out.println(i1);%>
											<td>
												<%= rs.getString(i1)%>
											</td>
										<%i1++; } %>
									</tr>
								<%}%>
						
						<%}else if(request.getParameter("usertype").toString().equals("professor")){
									qry = "select * from userdataviewprofessor";
									ResultSet rs = st.executeQuery(qry);
									ResultSetMetaData rsmddata = rs.getMetaData();									
									int colcount1 = rsmddata.getColumnCount();
									System.out.println("colcoutn"+colcount1);
							%>
									<% 
										while(rs.next()){ System.out.println("in begining");
										int i1=1;
									%>
										<tr>
											<td>
												<input name="cb" onclick="enabledropdown();" type="checkbox" id="<%=rs.getString("username")%>" value="<%=rs.getString("username")%>"></input>
											</td>
											<% while(i1<colcount1){ 
											System.out.println(i1);%>
												<td>
													<%= rs.getString(i1)%>
												</td>
											<%i1++; } %>
										</tr>
									<%}%>
							
							<%}%>
						
							</table>
						</td>
						<td width="15%">
						</td>
					</tr>
				</table>
		</tr> 
		<tr>
			<td align="center" height="50px">
			Copyright © 2012 Perfect Computer ! Inc. All Rig[color=red] [/color][size=9] [/size][size=12] [/size]hts Reserved
			</td>
			<%
				st.close();
				con.close();
			%>
		</tr>
	</table>
</body>
</html>

Welcome to the Ranch,

But just posting pages full of code isn;t going to get you any help.

Please ShowSomeEffort and do more than just say it doesn't work.

What is is supposed to do?
What part of that is it not doing?
From your debugging, where does the problem lie?
Can you not narrow it down to the exact line where things are going awry?

Also, there is no such thing as "jsp javascript". By the time the page gets to the browser, it's just an HTML page like any other. You might benefit from reading this article.

Thank you for your response...
Actually i have posted full page intentionaly..
it works fine before some time and suddenly stop working javascripts..
i can not find wht bug is there in this page..
so i have to write full code of page..
but for better understanding i writing piece of code which is called javascript..
it will help you to find the bug..
thnks in advance.

<td width="70%" align="center" height="400px">
							<div align="left" style="margin-left: 100px">
								<select id="task" style="">
									<option value="select">-select-</option>
									<option value="move">move to</option>
									<option value="copy">copy to</option>
								</select>
								<select id="category">
									<option value="select">-select-</option>
									<option value="student">Student</option>
									<option value="hod">HOD</option>
									<option value="professor">Professor</option>
								</select>
								<input type="button" value="done" onclick=""></input>
								
							</div>
							
							<div align="left" style="margin-left: 690px;margin-top: -26px">
								Status Type:
								<select id="status" style="">
									<option value="select">-select-</option>
									<option value="active">Active</option>
									<option value="inactive">Inactive</option>
								</select>
								<input type="button" value="Go" onclick="gofunction();"></input>
							</div>

even on page load onLoad is also stop working.

You have answered none of my questions.

here on button i am trying to call gofunction() from javascript..
but it doesnt call on click even of button...