//disables right click functionality
var message = "function disabled"; 
function rtclickcheck(keyp)
{ 
	if (navigator.appName == "Netscape" && keyp.which == 3)
	{ 	
		alert(message); 
		return false; 
	} 
	
	if (navigator.appVersion.indexOf("MSIE") != -1 && event.button == 2) 
	{
		alert(message); 	
		return false; 
	} 
} 

document.onmousedown = rtclickcheck;