function cHtml(lang){
	url = document.URL;
	if( !url.match('.shtml') ){
		url = url + 'index.shtml';
	}
	if(lang == 'j'){
		url = url.replace(/.shtml/,'-j.shtml');
	}else{
		url = url.replace(/-j.shtml/,'.shtml');
	}
	window.location.replace(url);
}