Problem with AJAX

Problem with AJAX

Hello, I am trying to make an AJAX script work, please tell me what I am doing wrong here 
This here's the JQuery/HTML part
  3. <html>
  4. <head>
  5. <script src="http://jqueryjs.googlecode.com/files/jquery-1.2.6.min.js" type="text/javascript"></script>
  6. <script type="text/javascript">
  7. $(document).ready(function(){ 
  8. $("#submit").onClick(function(){ 
  9. $.post("chsend.php", {
  10. name: $("#name").val();
  11. email: $("#email").val();
  12. msg: $("#msg").val();},
  13. function(data){
  14. alert(data);
  15. if(data == "name" || data == "email" || data =="wrongemail"){
  16. $("#change").addClass("red");
  17. if(data == "empty"){
  18. $("#change").append("Please fill the email and name fields properly <br />");
  19. }
  20. elseif(data == "wrongemail"){
  21. $("#change").append("Invalid email id <br />");
  22. }
  23. elseif(data == "emptywrongemail"){
  24. $("#change").append("Please fill the name field completely and the email field properly.");
  25. }
  26. }
  27. elseif(data == "success"){
  28. $("#change").addClass("green");
  29. $("#change").append("We were succesful in adding your name in our list! Thank You.");
  30. }
  31. });
  32.    });
  33. });   
  34.   
  35. </script>
  36. </head>
  37. <body>
  38. <div class="change">
  39. <form id="subfor">
  40. Full Name:<input type="text" id="name" /><br />
  41. Email ID:<input type="text" id="email" /></br />
  42. Message You would like to send:<input type="text" id="msg" /><br />
  43. <input type="button" id="submit" value="Submit" /><br />
  44. </form>
  45. </div>
  46. </body>
  47. </html>

Here is the PHP code

  2. <html>
  3. <body>
  4. <?php
  5. $name=htmlspecialchars(filter_var($_POST["name"],FILTER_SANITIZE_SPECIAL_CHARS));
  6. $email=filter_var($_POST["email"], FILTER_SANITIZE_SPECIAL_CHARS);
  7. $msg=htmlspecialchars(filter_var($_POST["msg"],FILTER_SANITIZE_SPECIAL_CHARS));
  8. if(empty($name)){
  9. $s="empty";
  10. if(!empty($email)){
  11. if(!filter_input($email, FILTER_VALIDATE_INPUT)){
  12. $s=$s."wrongemail";
  13. }
  14. }
  15. }
  16. else if(filter_input($email, FILTER_VALIDATE_INPUT)){
  17. $con=mysql_connect("localhost","root");
  18. if(!$con){
  19. die('Could not Connect:'.mysql_error());
  20. }
  21. mysql_select_db("projects", $con);
  22. mysql_query("INSERT INTO pat(NAME, EMAIL, MESSAGE) VALUES($name, $email, $msg)");
  23. $subject="<TEST>";
  24. mail($email,$subject,$msg);
  25. $s="success";
  26. }
  27. echo($s);
  28. ?>
  29. </body>
  31. <html>
  32. <body>
  33. <?php
  34. $name=htmlspecialchars(filter_var($_POST["name"],FILTER_SANITIZE_SPECIAL_CHARS));
  35. $email=filter_var($_POST["email"], FILTER_SANITIZE_SPECIAL_CHARS);
  36. $msg=htmlspecialchars(filter_var($_POST["msg"],FILTER_SANITIZE_SPECIAL_CHARS));
  37. if(empty($name)){
  38. $s="empty";
  39. if(!empty($email)){
  40. if(!filter_input($email, FILTER_VALIDATE_INPUT)){
  41. $s=$s."wrongemail";
  42. }
  43. }
  44. }
  45. else if(filter_input($email, FILTER_VALIDATE_INPUT)){
  46. $con=mysql_connect(<SQL server>,<username>,<password>);
  47. if(!$con){
  48. die('Could not Connect:'.mysql_error());
  49. }
  50. mysql_select_db("projects", $con);
  51. mysql_query("INSERT INTO pat(NAME, EMAIL, MESSAGE) VALUES($name, $email, $msg)");
  52. $subject="<TEST>";
  53. mail($email,$subject,$msg);
  54. $s="success";
  55. }
  56. echo($s);
  57. ?>
  58. </body>
  59. </html>
The  Jquery script, on alerting the value of data, returns nothing. Nothing occurs at all.