function chars_remaining(id, max_count, id_where)
{
	var elem = document.getElementById(id);
	var elem_where = document.getElementById(id_where);
	if(elem && elem_where)
	{
		var remains = max_count - elem.value.length;
		var text = "";
		var chars = "";
		if(remains >= 0)
		{
			if(remains > 4 || remains == 0) chars = " znakov";
			else if(remains <= 4 && remains > 1) chars = " znaky";
			else chars = " znak";
			elem_where.className = 'hint';
			text = "ostáva " + remains + chars;
		}
		else
		{
			remains = -remains;
			if(remains > 4 || remains == 0) chars = " znakov";
			else if(remains <= 4 && remains > 1) chars = " znaky";
			else chars = " znak";
			elem_where.className = 'alert2';
			text = "presiahli ste max dåžku o " + remains + chars;
		}

		elem_where.innerHTML = text;
	}
}