浏览器模拟F11

var fullindex=1;
function fullscreen(){
 if ($.browser.msie && $.browser.version.indexOf("8") == 0) {
  if(typeof window.ActiveXObject != "undefined") {
     //for IE8，这里和fullScreen相同，模拟按下F11键退出全屏
        var wscript = new ActiveXObject("WScript.Shell");
         if(wscript != null) {
         wscript.SendKeys("{F11}");
         } 
  }
 }else if(parseInt(fullindex)==1){
  var docElm = document.documentElement; 
         //W3C  
        if (docElm.requestFullscreen) { 
            docElm.requestFullscreen(); 
        } 
            //FireFox  
        else if (docElm.mozRequestFullScreen) { 
            docElm.mozRequestFullScreen(); 
        } 
            //Chrome等  
        else if (docElm.webkitRequestFullScreen) { 
            docElm.webkitRequestFullScreen(); 
        } 
            //IE11  
        else if (docElm.msRequestFullscreen) { 
         docElm.msRequestFullscreen(); 
        }
  fullindex=0;
 }else if(parseInt(fullindex)==0){
  if (document.exitFullscreen) { 
            document.exitFullscreen(); 
        } 
        else if (document.mozCancelFullScreen) { 
            document.mozCancelFullScreen();