am = "WARNING: Images used on this site are protected by copyrights.\nIf you use them without consent, you are breaking the law.";
bV  = parseInt(navigator.appVersion);
bNS = navigator.appName=="Netscape";
bIE = navigator.appName=="Microsoft Internet Explorer";

function nrc(e)
{ if (bNS && e.which > 1) { alert(am);return false; } else if (bIE && (event.button >1)) { alert(am);return false; } }

document.onmousedown = nrc;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
if (bNS && bV<5) window.onmousedown = nrc;