function right(mousebutton) 
{ 
var msg1 = "Sorry......The Site is closed"; 
 

if (navigator.appName == 'Netscape' && mousebutton.which==3) 
{ 
alert(msg1); 
return false; 
} 
else 

if (navigator.appName == 'Netscape' && mousebutton.which==1) 
{ 
alert(msg2); 
return false; 
} 
else 

if (navigator.appName == 'Microsoft Internet Explorer' && event.button == 2) 
{ 
alert(msg1); 
return false; 
} 
else 

if (navigator.appName == 'Microsoft Internet Explorer' && event.button == 2) 
{ 
alert(msg2); 
return false; 
} 
return true; 
} 
document.onmousedown = right; 
// -->