phonegap 监听手机键盘的显示隐藏

//相当于$(document).ready
document.addEventListener('DOMContentLoaded', 
function (){
document.addEventListener("deviceready", onDeviceReady, false);
}, false);
 
 
function onDeviceReady() {
//document.addEventListener("backbutton", onBackKeyDown, false);
document.addEventListener("hidekeyboard", onHide, false);
document.addEventListener("showkeyboard", onShow, false);  
}
 
function onHide() 
{
   alert(" hide");
}
 
function onShow() 
{
    alert("show");
}