document.oncontextmenu = new Function("return false;");
document.onkeydown = function(e) {
  if(event.keyCode == 123) {
     return false;
  }
  if(e.ctrlKey && e.shiftKey && e.keyCode == 'I'.charCodeAt(0)) {
     return false;
  }
  if(e.ctrlKey && e.shiftKey && e.keyCode == 'C'.charCodeAt(0)) {
     return false;
  }
  if(e.ctrlKey && e.shiftKey && e.keyCode == 'J'.charCodeAt(0)) {
     return false;
  }
  if(e.ctrlKey && e.keyCode == 'U'.charCodeAt(0)) {
     return false;
  }
  if(e.ctrlKey && e.keyCode == 'S'.charCodeAt(0)) {
     return false;
  }
} 

document.addEventListener('keyup', (e) => {
    if (e.key == 'PrintScreen') {
        navigator.clipboard.writeText('');
        alert('Screenshot disabled.');
    }
});

/** TO DISABLE PRINTS WHIT CTRL+P **/
document.addEventListener('keydown', (e) => {
    if (e.ctrlKey && e.key == 'p' || e.ctrlKey && e.key == 'P') {
        alert('This section is not allowed to print or export.');
        e.cancelBubble = true;
        e.preventDefault();
        e.stopImmediatePropagation();
    }
});