/*
var mymessage = "Please use the left mouse button to navigate.";
//"This function is not available on this page.";

function rtclickcheck(keyp){
if (navigator.appName == "Netscape" && keyp.which == 3) {
alert(mymessage);
return false;
}

if (navigator.appVersion.indexOf("MSIE") != -1 && event.button == 2) {
alert(mymessage);
return false;
}
}

document.onmousedown = rtclickcheck
*/