var typeDevice = "desktop";
    if (navigator.userAgent!=null){
    
       var userAgentVerify = navigator.userAgent.toLowerCase();    
       if (
           userAgentVerify.indexOf("ipad") != -1
           || 
           (userAgentVerify.indexOf("tablet") != -1 && userAgentVerify.indexOf("tablet pc") == -1)
           || 
           userAgentVerify.indexOf("playbook") != -1
           || 
           (userAgentVerify.indexOf("android") != -1 && userAgentVerify.indexOf("mobile") == -1)
          ){
          typeDevice = "tablet";
       }  
       if (
           userAgentVerify.indexOf("ipod") != -1
           || 
           userAgentVerify.indexOf("iphone") != -1
           || 
           (userAgentVerify.indexOf("android") != -1 && userAgentVerify.indexOf("mobile") != -1)
           || 
           userAgentVerify.indexOf("windows phone") != -1
           || 
           userAgentVerify.indexOf("windows ce") != -1
           || 
           userAgentVerify.indexOf("fennec") != -1
           || 
           userAgentVerify.indexOf("maemo") != -1
           || 
           userAgentVerify.indexOf("symbian") != -1
          ){
          typeDevice = "smartphone";
       }   
    }