FullScreen_toggle.js

$(document).ready(function(){
$.is_fs = false;
$.requestFullScreen = function(calr)
{
    var element = document.body;

    // Supports most browsers and their versions.
    var requestMethod = element.requestFullScreen || element.webkitRequestFullScreen || element.mozRequestFullScreen || element.msRequestFullScreen;

    if (requestMethod) { // Native full screen.
        requestMethod.call(element);
    } else if (typeof window.ActiveXObject !== "undefined") { // Older IE.
        var wscript = new ActiveXObject("WScript.Shell");
        if (wscript !== null) {
            wscript.SendKeys("{F11}");
        }
    }

    $.is_fs = true;

    $(calr).val('Exit Full Screen');
    $(calr).addClass('redBtn');
    $(calr).removeClass('greenBtn');
}

$.cancel_fs = function(calr)
{
    var element = document; //and NOT document.body!!
    var requestMethod = element.exitFullScreen || element.mozCancelFullScreen || element.webkitExitFullScreen || element.mozExitFullScreen || element.msExitFullScreen || element.webkitCancelFullScreen;

    if (requestMethod) { // Native full screen.
    requestMethod.call(element);
    } else if (typeof window.ActiveXObject !== "undefined") { // Older IE.
        var wscript = new ActiveXObject("WScript.Shell");
        if (wscript !== null) {
            wscript.SendKeys("{F11}");
        }
    }


    $(calr).val('Full Screen');
    $(calr).addClass('greenBtn');
    $(calr).removeClass('redBtn');

    $.is_fs = false;
}

$.toggleFS = function(calr)
{
    //adjust sidebar
    if($.is_fs == false)
    {
        if($('body').hasClass('sidebar-collapse')){} else
        $('.sidebar-toggle').click();
    }
    else
    {
        if($('body').hasClass('sidebar-collapse'))
        $('.sidebar-toggle').click();
    }

    //fix fullscreen
    $.is_fs == true? $.cancel_fs(calr):$.requestFullScreen(calr);
}

});