var LURL = "http://www.matsui-mfg.net/test/" ;		//‘O‚̀URL
	var URLS = "japanese/";

	function idou(urlf){
	
		IDO = document.URL ;
	
		if(urlf == "eng" ){
			RURL = IDO.substring(IDO.indexOf(URLS) + URLS.length);
		}else{
			RURL = IDO.substring(LURL.length);
			RURL = URLS + RURL ;
		}
		
		location.href = LURL + RURL ;
	}