function getSel() {
 if (window.getSelection) {
  window.getSelection().removeAllRanges();
 } else if (document.getSelection) {
  document.getSelection().removeAllRanges();
 } else {
  document.selection.empty();
 }
}

function right_prot(e) {
 e = e || window.event;
 e.keyCode = 0;
 if (navigator.appName =='Netscape' && (e.which == 2 || e.which == 3)) {
  return false;
 } else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button==2 || event.button == 3)) {
  return false;
 }
 return false;
}