function but(id, im) 
{
	var buttinimage = new Image();
	buttinimage.src = im;
	id.src = buttinimage.src;
}
function menu(obj)
{
	var t = obj.className.replace(/\boff\b/,"on");
	if (t === obj.className) 
	{
		t = obj.className.replace(/\bon\b/,"off");
	}
	obj.className = t;
}
function comment(obj)
{
	var t = obj.className.replace(/\boff\b/,"on");
	obj.className = t;
}