var prevKeys = [];
var codeKeys = [38,38,40,40,37,39,37,39,66,65];

$(document).addEvent('keydown', function(e)
{
	if(codeKeys.indexOf(e.code) < 0)
	{
		prevKeys.length = 0;
		return;
	}
	if(e.code >= 65)
	{
		e.stop();
	}
	prevKeys.push(e.code);
	if(prevKeys.length > codeKeys.length)
	{
		prevKeys.splice(0, prevKeys.length - codeKeys.length);
	}
	if(prevKeys.length == codeKeys.length)
	{
		var match = true;
		for(var k = 0; k < prevKeys.length; k++)
		{
			if(codeKeys[k] != prevKeys[k])
			{
				match = false;
				break;
			}
		}
		if(match)
		{
			var body = $(document).getElement('body');
			body.innerHTML = body.innerHTML.replace(/>[^<]*[^<\s][^<]*</g,'>klattu beratta nictu<');
		}
	}
});