Updated formInputClickSelector for button[type] IE7 issue. Closes rails#206.

Author: JangoSteve

src/rails.js

@@ -58,7 +58,7 @@
     formSubmitSelector: 'form',
 
     // Form input elements bound by jquery-ujs
-    formInputClickSelector: 'form input[type=submit], form input[type=image], form button[type=submit], form button:not([type])',
+    formInputClickSelector: 'form input[type=submit], form input[type=image], form button[type=submit], form button:not(button[type])',
 
     // Form input elements disabled during form submission
     disableSelector: 'input[data-disable-with], button[data-disable-with], textarea[data-disable-with]',