FS

-- arquivo principal com o menu ----

<li id="bt_FS"><a><i class="icon icon-group"></i> <span>Full Screen</span></a></li>


-- arquivo js do FullScreen --

function toggleFullScreen(elem) {
    if ((document.fullScreenElement !== undefined && document.fullScreenElement === null) || (document.msFullscreenElement !== undefined && document.msFullscreenElement === null) || (document.mozFullScreen !== undefined && !document.mozFullScreen) || (document.webkitIsFullScreen !== undefined && !document.webkitIsFullScreen)) {
        if (elem.requestFullScreen) {
            elem.requestFullScreen();
        } else if (elem.mozRequestFullScreen) {
            elem.mozRequestFullScreen();
        } else if (elem.webkitRequestFullScreen) {
            elem.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
        } else if (elem.msRequestFullscreen) {
            elem.msRequestFullscreen();
    }

        document.getElementsByTagName('html')[0].style.background = "#2379BD";
        document.getElementsByTagName('html')[0].style.padding = "0";
        document.getElementsByTagName('html')[0].style.margin = "0";
        document.getElementsByTagName('body')[0].style.background = "#2379BD";
        document.getElementsByTagName('body')[0].style.padding = "0";
        document.getElementsByTagName('body')[0].style.margin = "0";

        localStorage.setItem("FullScreen","Ativo");


    } else {
        if (document.cancelFullScreen) {
            document.cancelFullScreen();
        } else if (document.mozCancelFullScreen) {
            document.mozCancelFullScreen();
        } else if (document.webkitCancelFullScreen) {
            document.webkitCancelFullScreen();
        } else if (document.msExitFullscreen) {
            document.msExitFullscreen();
        }

        document.getElementsByTagName('html')[0].style.removeProperty("background");
        document.getElementsByTagName('html')[0].style.removeProperty("padding");
        document.getElementsByTagName('html')[0].style.removeProperty("margin");
        document.getElementsByTagName('body')[0].style.removeProperty("margin");
        document.getElementsByTagName('body')[0].style.removeProperty("margin");
        document.getElementsByTagName('body')[0].style.removeProperty("margin");

        localStorage.setItem("FullScreen","Inativo");
    }

}

document.addEventListener('fullscreenchange', exitHandler);
document.addEventListener('webkitfullscreenchange', exitHandler);
document.addEventListener('mozfullscreenchange', exitHandler);
document.addEventListener('MSFullscreenChange', exitHandler);
function exitHandler() {
    if (!document.fullscreenElement && !document.webkitIsFullScreen && !document.mozFullScreen && !document.msFullscreenElement) {
        localStorage.setItem("FullScreen","Inativo");
        document.getElementsByTagName('html')[0].style.removeProperty("background");
        document.getElementsByTagName('html')[0].style.removeProperty("padding");
        document.getElementsByTagName('html')[0].style.removeProperty("margin");
        document.getElementsByTagName('body')[0].style.removeProperty("margin");
        document.getElementsByTagName('body')[0].style.removeProperty("margin");
        document.getElementsByTagName('body')[0].style.removeProperty("margin");
    }
}


function chamaFS(){
    FS = localStorage.getItem('FullScreen');
    setTimeout(function(){
        if(FS == 'Ativo'){
            $("#bt_FS").trigger('click');
        }
    }, 1000);
    $("#bt_FS").click(function(){
        $("#bt_FS").hide();
    });
}