Could a website force the browser to go into fullscreen mode?

Question

I want to run a psychological study for which participants have to look at large images.

The experiment is done on the web and therefore in a browser window. Is it p

Answer 1

I have found some code after searching.

function fullscreen() {
    var element = document.getElementById("content");
    if (element.requestFullScreen) {
        if (!document.fullScreen) {
            element.requestFullscreen();
            $(".fullscreen").attr('src',"img/icons/panel_resize_actual.png");
        } else {
            document.exitFullScreen();
            $(".fullscreen").attr('src',"img/icons/panel_resize.png");
        }

    } else if (element.mozRequestFullScreen) {

        if (!document.mozFullScreen) {
            element.mozRequestFullScreen();
            $(".fullscreen").attr('src',"img/icons/panel_resize_actual.png");
            google.maps.event.trigger(map, 'resize');
        } else {
            document.mozCancelFullScreen();
            $(".fullscreen").attr('src',"img/icons/panel_resize.png");
        }

    } else if (element.webkitRequestFullScreen) {

        if (!document.webkitIsFullScreen) {
            element.webkitRequestFullScreen();
            $(".fullscreen").attr('src',"img/icons/panel_resize_actual.png");
            google.maps.event.trigger(map, 'resize');
        } else {
            document.webkitCancelFullScreen();
            $(".fullscreen").attr('src',"img/icons/panel_resize.png");
        } 
    } 
}

It will use html5 api. I switch with jquery the a special picture for it. Hope that will help out. At the moment, i don't know if you can force it, 'cause it was forbitten due security.