protected function detectRefererCampaign()
	{
		if(isset($this->currentUrlParse['query']))
		{
			$campaignParameters = Piwik_Common::getCampaignParameters();

			$campaignNames = $campaignParameters[0];
			foreach($campaignNames as $campaignNameParameter)
			{
				$campaignName = Piwik_Common::getParameterFromQueryString($this->currentUrlParse['query'], $campaignNameParameter);
				if( !empty($campaignName))
				{
					break;
				}
			}

			if(!empty($campaignName))
			{
				$this->typeRefererAnalyzed = Piwik_Common::REFERER_TYPE_CAMPAIGN;
				$this->nameRefererAnalyzed = $campaignName;
				$campaignKeywords = $campaignParameters[1];

				$i = 0; //mychanges
				$num_elements = count($campaignKeywords);//mychanges
				foreach($campaignKeywords as $campaignKeywordParameter)
				{
					$i++;
					$campaignKeyword = Piwik_Common::getParameterFromQueryString($this->currentUrlParse['query'], $campaignKeywordParameter);
					if( !empty($campaignKeyword))
					{
						$this->keywordRefererAnalyzed = $campaignKeyword;
						break;
					}
					elseif ($i == $num_elements) {//mychanges
						$searchEngineInformation = Piwik_Common::extractSearchEngineInformationFromUrl($this->refererUrl);//mychanges
						Piwik_PostEvent('Tracker.detectRefererSearchEngine', $searchEngineInformation, $this->refererUrl);//mychanges
						if($searchEngineInformation !== false){//mychanges
								$this->keywordRefererAnalyzed = $searchEngineInformation['keywords'];//mychanges
								break;//mychanges
						}//mychanges
					}//mychanges
				}

				return true;
			}
		}
		return false;
	}