function hirobaDetectLocale() {
		var hirobaLang = "en_US" ;
   		if(navigator.language) {
   			hirobaLang = navigator.language;
   		} else if (navigator.browserLanguage){
   			hirobaLang = navigator.browserLanguage;
   		}
   		if(hirobaLang.length >= 5) {
   			return hirobaLang.substring(0,2) + "_" + hirobaLang.substring(3,5).toUpperCase() ; 
   		} else if (hirobaLang.length == 2){
   			return hirobaLang.substring(0,2);
   		} else {
   			return "en_US";
   		}
	}

	function hirobaWriteLocale(localeName) {
		if (document.getElementsByName) {
		  var metaArray = document.getElementsByName('gwt:property');
		  for (var i=0; i<metaArray.length; i++) {
		  	if(metaArray[i].content == "locale=en_US") {
		  		metaArray[i].content="locale="+localeName;
				break;
		  	}
		  }
		}
	}	
	hirobaWriteLocale(hirobaDetectLocale())	;