var _DM_TrackCookie_CallbackFunc;
var _DM_Newstogram_UserName;
var _DM_Newstogram_APIKEY;

function DMTrackCookie(APIKEY,VisitorUserName,CallbackFunc){
	if (APIKEY == null)
		return;
	_DM_Newstogram_APIKEY = APIKEY;
	if (CallbackFunc != null)
		_DM_TrackCookie_CallbackFunc = CallbackFunc;
	
	VisitorUserName = VisitorUserName == '' ? null : VisitorUserName;
	var _DM_CookieVal = _DMreadCookie('DMTrackingCode');
		
	if (_DM_CookieVal == null){
		_DM_CallUserCodeWS(VisitorUserName);				
	}else{
		var _DM_Vals = _DM_CookieVal.split(":");
		var _DM_AccountId = _DM_Vals[0];
		var _DM_UserName = _DM_Vals[1];
		if (_DM_UserName == null && VisitorUserName != null || _DM_UserName != VisitorUserName){
			if (_DM_UserName != VisitorUserName)
				_DM_AccountId = '';
			_DM_CallUserCodeWS(VisitorUserName,_DM_AccountId);	
		} else {
			if(_DM_TrackCookie_CallbackFunc != null)
				eval(_DM_TrackCookie_CallbackFunc);
		}
	}
}
function _DM_CallUserCodeWS(VisitorUserName,AccountId){	
	var url = 'http://74.54.37.141/v1/webroot/index.php?output=jsonrest&service=usercode&call=getcode&apikey='+_DM_Newstogram_APIKEY+'&callback=_DM_WriteUserCodeCookie';
	if (VisitorUserName != null)
		url = url + '&clientaccountid='+VisitorUserName;
	if (AccountId != null)
		url = url + '&userid='+AccountId;	
	
	var scriptTag = _DM_CreateScriptTag();
	scriptTag.setAttribute("src", url);	
	_DM_Newstogram_UserName = VisitorUserName;
}
function _DM_CreateScriptTag() {
	var scriptTag = document.createElement("script");
	scriptTag.setAttribute("type", "text/javascript");
	document.getElementsByTagName("head")[0].appendChild(scriptTag);
	return scriptTag;
}
function _DM_WriteUserCodeCookie(JSON){
	var Value = JSON.Code;	
	if (_DM_Newstogram_UserName != null && _DM_Newstogram_UserName != '')
		Value = Value + ':' + _DM_Newstogram_UserName;
	
	_DMcreateCookie('DMTrackingCode', Value ,365);
	if (_DM_TrackCookie_CallbackFunc != null)
		eval(_DM_TrackCookie_CallbackFunc);	
}
function _DMcreateCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/;"
}
function _DMreadCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}