//Initialize some initial string variables we'll look for later.
var engineWebKit = "webkit";
var deviceIphone = "iphone";
var deviceIpod = "ipod";
var deviceIpad = "ipad";
var deviceMacPpc = "macintosh"; //Used for disambiguation


//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)
   {
      //The iPad and iPod Touch say they're an iPhone! So let's disambiguate.
      if (DetectIpad() || DetectIpod())
         return false;
      //Yay! It's an iPhone!
      else 
         return true;
   }
   else
      return false;
}

//**************************
// 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  && DetectWebkit())
      return true;
   else
      return false;
}

//**************************
// Detects if the current device is an iPhone or iPod Touch.
function DetectIphoneOrIpod()
{
   //We repeat the searches here because some iPods 
   //  may report themselves as an iPhone, which is ok.
   if (uagent.search(deviceIphone) > -1 ||
       uagent.search(deviceIpod) > -1)
       return true;
    else
       return false;
}

//**************************
// Detects *any* iOS device: iPhone, iPod Touch, iPad.
function DetectIos()
{
   if (DetectIphoneOrIpod() || DetectIpad())
      return true;
   else
      return false;
}

//**************************
// Detects if the current browser is based on WebKit.
function DetectWebkit()
{
   if (uagent.search(engineWebKit) > -1)
      return true;
   else
      return false;
}

function InsertVideo(url, caption)
{
	var	theLink = "<iframe frameborder='0' ";
	if(DetectIpad()) {
		theLink += "width='480' ";
		theLink += " height='270' ";
	} else {
		theLink += "width='280'";
		theLink += " height='157' ";
	}
	
	theLink += "src='"+url+"'></iframe><br/>";
	
	theLink += "<p>"+caption+"</p>";
	document.write(theLink);
}