if (document.layers){
	document.captureEvents(Event.MOUSEDOWN);
}

// prevents pasting via keyboard
function onKeyDown(event) {
		if(event.ctrlKey){
			var pressedKey = String.fromCharCode(event.keyCode).toLowerCase();
			if (pressedKey == "c" || pressedKey == "v" || pressedKey == 45) {
				event.returnValue = false;
				return false;
			}
		}
}	
// prevents pasting via right click menu
function onMouseDown(event) {
	if (document.layers)
	{
		if (event.which == 2 || event.which == 3)
		{
			return false;
		}
	}
	else if (document.all && document.getElementById) {
		if (event.button == 2)
		{
			return false;
		}
	}
}