判断及设置浏览器全屏模式

//设置浏览器全屏 
function f_SetFullScreen() { 
//如果浏览器不是全屏则将其设置为全屏模式 
if (!f_IsFullScreen()) { 
var wsShell = new ActiveXObject('WScript.Shell'); 
wsShell.SendKeys('{F11}'); 
return false; 
} 
} 

//判断浏览器是否全屏 
function f_IsFullScreen() { 
return (document.body.scrollHeight == window.screen.height && document.body.scrollWidth == window.screen.width); 
}