having problems with .prop("disabled", false) it's works fine in opera and firefox but IE and chrome i can't get it to work.. Actualy it's a invination form and im make send button like this and here is css .mail_send[disabled="disabled"] {background-color:#343434; color:#747474} So as you can see button is disabled and you can't click, you must first write your name and mail after that button is remove disabled and you can send mail. For this im write code here is: http://pastebin.com/8u23G90b But something is wrong here, in chrome and IE disabled never removed from button, im also load jquery 1.7.1 p.s sorry for my english