function right(e) {
	if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2)) return false;
	else if (navigator.appName == 'Safari' && (e.which == 3 || e.which == 2)) return false;
	else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3)) {
		alert("Cette image fait l objet d un copyright.");
		return false;
	}
	return true;
}

document.onmousedown = right;
document.onmouseup = right;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
if (document.layers) window.captureEvents(Event.MOUSEUP);
window.onmousedown = right;
window.onmouseup = right;


/*
var ns = (document.layers)? true:false;
var ie = (document.all)? true:false;
if (ns) document.captureEvents(Event.MOUSEDOWN || Event.CLICK);
document.onclick = sourcecodeprotect;
document.onmousedown = sourcecodeprotect;

function sourcecodeprotect(e) {
  if (ns&&(e.which==3)) return false;
  else if (ie&&(window.event.button==2)) alert("Source code protected");
  else return true;
  }

function cleanup() {
  if (ns) document.releaseEvents(Event.MOUSEDOWN || Event.CLICK);
  }
  
  // dans body 
  //  ondragstart="return false"
  */