Validation controls not working

I was playing around with some validation controls and all of a sudden all validation controls on my page stopped working, any idea what i could have screwed up?

       
               
                     
               
                    First Name / Last Name
               
                     
               
                   
 
                   

                                            ErrorMessage="First name is empty." ControlToValidate="Firstname" >
                                            ErrorMessage="Last name is empty." ControlToValidate="Lastname" >
               
               
                     
           
           
               
                     
               
                    Handphone
               
                     
               
                   

                                            ErrorMessage="Handphone number is empty." ControlToValidate="handphone" >
               
               
                     
           
           
               
                     
               
                    Password
               
                     
               
                   
                                            ControlToValidate="Password2" ErrorMessage="Password cannot be empty."
                        ValidateEmptyText="True">
                   
                                            ErrorMessage="CompareValidator">