function click(e) {
if (document.all) {
if (event.button==2||event.button==3) {
oncontextmenu='return false';
}
}
if (document.layers) {
if (e.which == 3) {
oncontextmenu='return false';
}
}
}
if (document.layers) {
document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
document.oncontextmenu = new Function("return false;")

document.onclick=checkLink;
function checkLink() {
if(event.srcElement.tagName=='A' && event.shiftKey) {
    event.returnValue=false;
    location.href=event.srcElement.href;
    }
if(event.srcElement.tagName=='IMG' && event.shiftKey) {
    event.returnValue=false;
    location.href=event.srcElement.href;
    }
}