var isIphone = false; 

//Initialize some initial string variables we'll look for later.
var deviceIphone = "iphone";
var deviceIpod = "ipod";
var deviceIpad = "ipad";
//----------------------------------
var deviceAndroid = "android";
//----------------------------------
var deviceWinPhone7 = "windows phone os 7"; 
var deviceWinMob = "windows ce";
//----------------------------------
var deviceBB = "blackberry";
var devicePalm = "palm";

//Initialize our user agent string.
var uagent = navigator.userAgent.toLowerCase();

//**************************
// Detects if the current device is an iPhone.
function DetectIphone()
{
   if (uagent.search(deviceIphone) > -1)
      return true;
}

//**************************
// Detects if the current device is an iPod Touch.
function DetectIpod()
{
   if (uagent.search(deviceIpod) > -1)
      return true;
   else
      return false;
}

//**************************
// Detects if the current device is an iPad tablet.
function DetectIpad()
{
   if (uagent.search(deviceIpad) > -1)
      return true;
   else
      return false;
}


//**************************
// Detects if the current device is a (small-ish) Android OS-based device
// used for calling and/or multi-media (like a Samsung Galaxy Player).
// Google says these devices will have 'Android' AND 'mobile' in user agent.
// Ignores tablets (Honeycomb and later).
function DetectAndroidPhone() 
{
   if ((uagent.search(deviceAndroid) > -1))
      return true;
}

//**************************
// Detects if the current browser is a 
// Windows Phone 7 device.
function DetectWindowsPhone7()
{
   if (uagent.search(deviceWinPhone7) > -1)
      return true;
   else
      return false;
}

//**************************
// Detects if the current browser is a Windows Mobile device.
// Excludes Windows Phone 7 devices. 
// Focuses on Windows Mobile 6.xx and earlier.
function DetectWindowsMobile()
{
   //Most devices use 'Windows CE', but some report 'iemobile' 
   //  and some older ones report as 'PIE' for Pocket IE. 
   if (uagent.search(deviceWinMob) > -1 )
      return true;
   else
	  return false;
}

//**************************
// Check to see whether the device is a 'smartphone'.
//   You might wish to send smartphones to a more capable web page
//   than a dumbed down WAP page. 
function DetectSmartphone()
{
   if (DetectIphone())
      return true;
   if (DetectIpod())
	  return true;
   if (DetectIpad())
      return true;
   if (DetectAndroidPhone())
      return true;
   if (DetectWindowsMobile())
      return true;
   if (DetectWindowsPhone7())
      return true;
   if (DetectBlackBerry())
      return true;
   if (DetectPalmOS())
      return true;

   //Otherwise, return false.
   return false;
};


//**************************
// Detects if the current browser is a BlackBerry of some sort.
function DetectBlackBerry()
{
   if (uagent.search(deviceBB) > -1)
      return true;
   else
      return false;
}


//**************************
// Detects if the current browser is on a PalmOS device.
function DetectPalmOS()
{
   if (uagent.search(devicePalm) > -1)
      return true;
   else
      return false;
}