function changeLang() {
	//var xx = document.lang.langSelect;
	var xx = document.langu.langSelect.selectedIndex;
	var value = document.langu.langSelect.options[xx].value;
	//alert(document.langu.langSelect.options[xx].value);
	if (value  == 'rus') {
		top.document.location.href = "http://www.hp-developments.de/ru";
	}
	else if (value  == 'ger') {
		top.document.location.href = "http://www.hp-developments.de/";
	}
	else if (value  == 'eng') {
		top.document.location.href = "http://www.hp-developments.de/eng";
	}
	}