function is_mobile(){
	
  var user_agent= navigator.userAgent;
  user_agent=user_agent.toLowerCase();
  var mobile_browser= false;

  switch(true){

    case (user_agent.indexOf('iphone')!=-1):
      mobile_browser = true;
    break;

    case (user_agent.indexOf('android')!=-1):
      mobile_browser = true;
    break;

    case (user_agent.indexOf('opera mini')!=-1):
      mobile_browser = true;
    break;

    case (user_agent.indexOf('blackberry')!=-1):
      mobile_browser = true; 
    break;
	
	case (user_agent.indexOf('windows phone')!=-1):
      mobile_browser = true; 
    break;

  }
  return mobile_browser; // Retourne True si ses un mobile sinon False.
}