var _pattern = "android|blackberry|googlebot-mobile|iemobile|ipad|iphone|ipod|opera mobile|palmos|webos"
 var _regex = new RegExp(_pattern, "ig");
 var _UA = navigator.userAgent;

 var domainUrl = window.location.href;
 var pathUrl = window.location.pathname;

 if(_regex.test(_UA) && pathUrl.search("/us/") != -1){

        
 }
 else{
 	location.href=domainUrl.replace('/usmobile/', '/us/');
 }