function DisableOnContextMenu(ev) {
	return false;
}

function DisableContextMenu(ev) {
	if (ev) {
		if (ev.button && ev.button == 2) {
			return false;
		} else if (!ev.button && ev.which == 3) {
			return false;
		} else if (navigator.platform.indexOf("Mac")!=-1
			&& navigator.appName == "Netscape") {
			return false;
		}
	} else {
		if (event && event.button && event.button == 2) {
		return false;
		}
	}
}

document.getElementById('adviewBoxImg').onmousedown=DisableContextMenu;
document.getElementById('adviewBoxImg').oncontextmenu=DisableOnContextMenu;