reenable_password_pasting.user.js

// ==UserScript==
// @name         Re-enable password pasting
// @namespace    http://yechengfu.com
// @version      0.1
// @description  Re-enable password pasting.
// @author       Yecheng Fu
// @match        https://accounts.ctrip.com/*
// @grant        none
// @refer		 http://prioritized.net/blog/re-enabling-password-pasting-on-annoying-web-forms/
// ==/UserScript==
var inputs = document.getElementsByTagName('input');  
for (var i=0; i < inputs.length; i++) {  
	if (inputs[i].getAttribute('type').toLowerCase() === 'password') {
        inputs[i].setAttribute('onpaste', '');
    }
}