anchor.diff:  			String description = rs.getString("description");
   			
   			out.println("<tr bgcolor=#FFFFFF>");
  +			out.println("<td><input type=checkbox name=id value="+id+" /></td>");
   			out.println("<td>"+id+"</td>");
   			out.println("<td>"+name+"</td>");
   			out.println("<td>"+englishName+"</td>");
  
positive.code: 		<tr>
  			<td>
  				<input type='hidden' value='del' name='action' />
  				<a href="#" onclick="var array= document.getElementByName('id');for(var i=0;i<array.length;i++){array[i].checked=true;}">all checked</a>
  				<a href="#" onclick="var array= document.getElementByName('id');for(var i=0;i<array.length;i++){array[i].checked=false">all unchecked</a>
  				<input type="submit" onclick="return confirm('will delete all the person records');" value="delete" />
  			</td>
  		</tr>
  
negative.code: 	stmt = conn.createStatement();
  	rs = stmt.executeQuery("select * from tb_person");
  %>
  <script type="text/javascript">
  	 uncheckedAll=function(){
  		 alert(" uncheck all");
  		var array= document.getElementByName("id"); 
  		System.out.println(array);  
  		for(var i=0;i<array.length;i++){
  			array[i].checked=false;
  		}
  	}
  	
  	checkedAll = function(){
  		alert(" check all");
  		var array= document.getElementByName("id"); 
  		alert(array);
  		for(var i=0;i<array.length;i++){
  			array[i].checked=true;
  			}
  	}
  	</script>
  	
  <form action = operatePerson.jsp method="get">
  	<table bgcolor="#cccccc" cellspacing=1 cellpadding=5 width=100%>
  		<tr bgcolor="#dddddd">
  			<th></th>
  			<th>ID</th>
  			<th>Name</th>
  			<th>English Name</th>
  