function click(e){
var message="You cannot do that";
if (document.all){ // for IE
alert("IE")
if (event.button==2||event.button==3){
alert(message);
return false;
}
} else { // for Firefox
if (e.button==2||e.button==3){
alert("FF")
e.preventDefault();
e.stopPropagation();
alert(message);
return false;
} else {
alert("Chrome / Safari");
}
}
}
}
if (document.all){ // for IE
document.onmousedown = click;
} else { //for FF
document.onclick = click;
}
