function chkRegThis() {


    if( $("form#sendForm #name").val() == "" ){
        alert("Please enter your name!");
        $("form#sendForm #name").focus();
        return false;
    }  

    var email = Trim($("form#sendForm #email").val());
    if(email == ""){
        alert( "Please enter your email address." );
        $("form#sendForm #email").focus();
        return false;
    }else{
        if(!checkEmail(email)){
            alert("Your email address format is incorrect, please reenter it.");
            $("form#sendForm #email").focus();
            return false;
        }
    }

    if( $("form#sendForm #message").val() == "" ){
        alert("Please enter contact information.");
        $("form#sendForm #message").focus();
        return false;
    }  
    
    
    //驗證碼
    if( $("form#sendForm #code").val() == "" ){
        alert("Please enter verification code.");
        $("form#sendForm #code").focus();
        return false;
    }   

    $("form#sendForm submit").prop('disabled',true);

    $.ajax({
        type: "POST",
        url: "ajax/send_contact.php",
        data: $("form#sendForm").serialize(),
        dataType: "json",
        cache: false,
        async: false,
        success: function(data) {

            if(data['status'] == "true"){
                turn = true;
                alert('The message has been successfully sent.');
                location.reload();
            }else{
                alert(data['msg']);
                turn = false;
                $("form#sendForm submit").prop('disabled',false);
                reSIImage();
                $('#code').val('');
            }
        }
    });
    return turn;

}