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();