// Disable refresh and back button functions
window.addEventListener('load', function() {
    // Prevent F5 and Ctrl+R refresh
    document.addEventListener('keydown', function(e) {
        // F5 key
        if (e.key === 'F5' || 
            // Ctrl + R
            (e.ctrlKey && e.key.toLowerCase() === 'r') ||
            // Command + R (for Mac)
            (e.metaKey && e.key.toLowerCase() === 'r')) {
            e.preventDefault();
            return false;
        }
    });

    // Disable right-click menu
    document.addEventListener('contextmenu', function(e) {
        e.preventDefault();
        return false;
    });

    // Disable browser back button
    history.pushState(null, null, location.href);
    window.addEventListener('popstate', function() {
        history.pushState(null, null, location.href);
    });
});