注册获取验证码修改 code review by liuyue

@@ -401,9 +401,9 @@ $registerPage.find('.va').keyup(function() {
         }
 
         if (statusLen === 4 && $('#agree-terms').is(':checked')) {
-            $registerBtn.removeClass('disable');
+            $registerBtn.removeClass('disable').removeAttr('disabled');
         } else {
-            $registerBtn.addClass('disable');
+            $registerBtn.addClass('disable').attr('disabled', 'true');
         }
 
         // 图形验证通过时，发送短信按钮可点击
@@ -457,3 +457,21 @@ $sendCaptcha.click(function() {
         $sendCaptcha.addClass('disable').val(timeResidue-- + '秒可重新发送');
     }, 1000);
 });
+
+//form表单提交
+$registerBtn.click(function() {
+
+    if ($(this).hasClass('disable')) {
+        return;
+    } else {
+        ('#register-form').submit();
+    }
+});
+
+$('.change-captcha').click(function() {
+    var time = new Date(),
+        $captchaImg = $('.captcha-img'),
+        captchaImgSrc = $captchaImg.attr('src').split('?')[0];
+
+    $captchaImg.attr('src', captchaImgSrc + '?t=' + time.getTime());
+});
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