js 父窗口控制子窗口的行为-打开，关闭，重定位
http://www.jb51.net/article/23130.htm

var winID = null; 

//打开窗口 
function openWindow() { 
winID = window.open("windowTime.html","JavaScript"); 
} 

//关闭窗口 
function closeWindow() { 
if(winID && winID.open && !winID.closed) { 
winID.close(); 
} 
} 

//更改URL网址 
function changeURL(newURL) { 
if(winID && winID.open && !winID.closed) 
winID.location.href = newURL; 
}