Created by Jerry Wang, last modified on Jun 19, 2015
AttachBroswerEvent is available for every control as defined in Control.js:
该方法内部会维护一个array aBindParameters来存放event name和listener:
最后使用jQuery的方法注册keyDown event：
对同一control重复调用该方法会导致array里出现duplicate的值：
runtime时event handler被调用的次数= this.aBindParameters.length