function abc(id)
{
	if(id == 'rus') {
		document.getElementById('alph_ru').className = "selected";
		document.getElementById('alph_en').className = "not_selected";
		document.getElementById('alphabet_eng').style.display = 'none';
		document.getElementById('alphabet_rus').style.display = 'block';
	} else {
		document.getElementById('alph_ru').className = "not_selected";
		document.getElementById('alph_en').className = "selected";
		document.getElementById('alphabet_eng').style.display = 'block';
		document.getElementById('alphabet_rus').style.display = 'none';
	}
}