var clickmessage = "Archivio G.S. Brunero. All rights reserved.";

function disableclick(e) {
if (document.all) {if (event.button==2||event.button==3) {if (event.srcElement.tagName=="IMG"){
alert(clickmessage);
return false;
}}}
else if (document.layers) {if (e.which == 3) {alert(clickmessage);
return false;
}}
else if (document.getElementById){
if (e.which==3&&e.target.tagName=="IMG"){
alert(clickmessage)
return false
}}}

function associateimages(){
for(i=0;i<document.images.length;i++)
document.images[i].onmousedown=disableclick;}

if (document.all)
document.onmousedown=disableclick
else if (document.getElementById)
document.onmouseup=disableclick
else if (document.layers)
associateimages()