function cht_chs() {
	var cur_loc=document.location.pathname; 
	if(location.href.toString().search('/cht/')!=-1)	{
		document.location.href=(location.href.toString().replace('/cht/','/chs/'));
	} 
}

function chs_cht() {
	var cur_loc=document.location.pathname; 
	if(location.href.toString().search('/chs/')!=-1)	{
		document.location.href=(location.href.toString().replace('/chs/','/cht/'));
	} 
}

function cht_eng() {
	var cur_loc=document.location.pathname; 
	if(location.href.toString().search('/cht/')!=-1)	{
		document.location.href=(location.href.toString().replace('/cht/','/eng/'));
	} 
}

function eng_cht() {
	var cur_loc=document.location.pathname; 
	if(location.href.toString().search('/eng/')!=-1)	{
		document.location.href=(location.href.toString().replace('/eng/','/cht/'));
	} 
}

function chs_eng() {
	var cur_loc=document.location.pathname; 
	if(location.href.toString().search('/chs/')!=-1)	{
		document.location.href=(location.href.toString().replace('/chs/','/eng/'));
	} 
}

function eng_chs() {
	var cur_loc=document.location.pathname; 
	if(location.href.toString().search('/eng/')!=-1)	{
		document.location.href=(location.href.toString().replace('/eng/','/chs/'));
	} 
}