document.observe("dom:loaded", function() {	
	$("viet").style.display = "none";
});

function showEng(){
	$("viet").style.display = "none";
	$("eng").style.display = "";
	$("English").className = "info";
	$("Vietnamese").className = "";
}

function showViet(){
	$("eng").style.display = "none";
	$("viet").style.display = "";
	$("English").className = "";
	$("Vietnamese").className = "info";

}