Unity WebGL check if Mobile

How can i check if webgl is being played on mobile environment?
I did google some examples on this but none of them worked properly.
I tried Input.touchSupported, and #if UNITY_IOS || UNITY_ANDROID. any ideas?

Okay, i've just found the best way to do this.

http://answers.unity.com/answers/1698985/view.html

it worked right away.

assets/plugins/webgl/MyPlugin.jslib

var MyPlugin = {
   IsMobile: function()
   {
      return UnityLoader.SystemInfo.mobile;
   }
};  
mergeInto(LibraryManager.library, MyPlugin);

in Unity

[DllImport("__Internal")]
 private static extern bool IsMobile();

 public bool isMobile()
 {
     #if !UNITY_EDITOR && UNITY_WEBGL
         return IsMobile();
     #endif
     return false;
 }