This event $('#sign').click(SignIn) show input forms in <div id="panel_left"> and when i try to click on input with id="loginuser" it should set value to "" but it's not working, any solutions?

1. <script>
2.     $(document).ready(function(){
3.         
4.         $("#faq").change(onSelectChange);
5.         $("#LinkBox").focus(function() {
6.                 $(this).attr("value","");
7.         });
8.        
9.         $('#sign').click(SignIn);
10.         
11.         $("#loginuser").focus(function() {
12.         $(this).attr("value","");
13.         });
14.        
15.        
16.     });
17.    
18.     function onSelectChange(){
19.         var selected = $("#faq option:selected");   
20.         var output = "";
21.         if(selected.val() != 0){
22.             output = "Answer: " + selected.attr('name') ;
23.         }
24.         $("#answer").html(output);
25.     }
26.    
27.     function SignIn(){ 
28.         var output = "";
29.         output = '<input type="text" id="loginuser" size="8" maxlenght="8" value="Login" class="login"> <input type="password" id="password" size="8" maxlenght="8" value="Password" class="pass"><input type="submit" value="Sign In" class="send"/>';
30.         $("#panel_left").html(output);
31.     }
32. </script>