un-validates when pressing submit

I have this code it works fine validates fine until i press submit and it fails can anyone tell me what i am missing   

just a simple drop down box

<tr> <td><label for="subject">Subject</label></td>
 <td><select name="subject" id="subject" value="<?=$_SESSION['post']['subject']?>" >  <option value="0" selected="selected">Choose</option> 
<option value="Question">Question</option> 
<option value="Business proposal">Business proposal</option> 
<option value="Advertisement">Advertising</option> <option value="Complaint">Complaint</option> </select>
 </td> <td id="subjectInfo">Subject</td> </tr>

HTML:

 With this javascript

var subject = $("#subject"); 
var subjectInfo = $("#subjectInfo"); 

 form.submit(function(){
 if(validateName() & validateEmail() & validateSubject() & validateName() & validateName()) 
 return true
else 
return false; }); 

 function validateSubject(){ 
if(this.selectedIndex > 0) { 
subjectInfo.text("Valid");
 subjectInfo.removeClass("error");
 return true; } 
 // Not valid
 else{ 
subjectInfo.text("NOT valid"); 
subjectInfo.addClass("error"); 
return false;  } 
}

Code (markup):

 

 Again it works fine up until i press submit and it goes from valid to not valid! can anyone tell me what i am not seeing??