var installRightClickHandlerID = window.setInterval(installRightClickHandler, 500);

function installRightClickHandler()
{
	try
	{
		document.body.oncontextmenu = rightClickHandler;
		window.clearInterval(installRightClickHandlerID);			
	}
	catch(e)
	{			
	}
}

function rightClickHandler(event)
{
	try
	{
		if(!event) event = window.event;
		return event.ctrlKey;
	}
	catch(e)
	{
		return false;
	}
}