Disable Right Click on Pop Up window

Question

Does anyone know how I can disable the right click on a pop up window? Its an art site and the artists want their stuff protected even minimally. Heres my pop up code what do I need to add?
function popUpImage2()
    var popupimage = document.getElementById("image2").src;
    newwindow=window.open(popupimage,"POPUP","height=400,width=400");
    if (window.focus) newwindow.focus();

Answer 1

not 100% sure as it isn't tested but you could always do
function popUpImage2(){
    var  popupimage = document.getElementById("image2").src;
     newwindow=window.open(popupimage,"POPUP","height=400,width=400");
    if  (window.focus) newwindow.focus();
     newwindow.document.onmousedown = function(){
          if  (event.button==2){
             alert("Right click disabled");
               return false;
That may work but it doesn't stop the person going to the file menu and clicking save so pointless really, you would be better off loading a dynamic php page with the image name in the query string.