////////////////////////////////////

// Setting "onlyOnImages" to "true" will disable right-clicking only for
// images
var onlyOnImages = false;

// Detect the browser
var isIE5 = document.all && document.getElementById;  // IE 5 or higher
var isMoz = !isIE5 && document.getElementById;  // Mozilla/Firefox

function cancelContextMenu(e) {
	// Here you can add additional code that is executed when the context menu
	// is blocked. For instance, you can use the following code to display a
	// message to the user:
	// alert("Right-click disabled!");

	return false;
}

/* This function is fired every time a user clicks the right mouse button to
open the browser's context menu. */
function onContextMenu(e) {
	// Depending on the "onlyOnImages" variable the context menu is either
	// blocked for the complete page or only for <img> tags.
	if (onlyOnImages = false
     || (isIE5 && event.srcElement.tagName == "IMG")
     || (isMoz && e.target.tagName == "IMG")) {
		return cancelContextMenu(e);
	}
}

if (document.getElementById) {
	// Register event handler
	document.oncontextmenu = onContextMenu;
	//document.onkeyup = disallowspecialchars;
}