var _gaq = _gaq || [];

function gaTrackPageview(vpv){
	try{
		_gaq.push(['_trackPageview',vpv]);
		_gaq.push(['rollup._trackPageview',vpv]);
	}
	catch(e){}
}
function gaTrackEvent(gaCategory,gaAction,gaLabel)
{
	try{
		_gaq.push(['_trackEvent',gaCategory,gaAction,gaLabel]);
		_gaq.push(['rollup._trackEvent',gaCategory,gaAction,gaLabel]);
	}
	catch(e){}
}

if (typeof jQuery != 'undefined') {
    jQuery(document).ready(function($) {
        var filetypes = /\.(zip|exe|pdf|doc*|xls*|ppt*|mp3)$/i;
        var baseHref = '';
        if (jQuery('base').attr('href') != undefined)
            baseHref = jQuery('base').attr('href');
        jQuery('a').each(function() {
            var href = jQuery(this).attr('href');
            if (href && (href.match(/^https?\:/i)) && (!href.match('knobs4less.com'))) {
                jQuery(this).click(function() {
                    var extLink = href.replace(/^https?\:\/\//i, '');
                    _gaq.push(['External','Click',extLink]);
                    if (jQuery(this).attr('target') != undefined && jQuery(this).attr('target').toLowerCase() != '_blank') {
                        setTimeout(function() { location.href = href; }, 200);
                        return false;
                    }
                });
            }
            else if (href && href.match(/^mailto\:/i)) {
                jQuery(this).click(function() {
                    var mailLink = href.replace(/^mailto\:/i, '');
                    _gaq.push(['Email','Click',mailLink]);
                });
            }
            else if (href && href.match(filetypes)) {
                jQuery(this).click(function() {
                    var extension = (/[.]/.exec(href)) ? /[^.]+$/.exec(href) : undefined;
                    var filePath = href;
                    _gaq.push(['Download','Click-' + extension, filePath]);
                    if (jQuery(this).attr('target') != undefined && jQuery(this).attr('target').toLowerCase() != '_blank') {
                        setTimeout(function() { location.href = baseHref + href; }, 200);
                        return false;
                    }
                });
            }
        });
        _ga.trackSocial();
    });
}

var _ga = _ga || {};


_ga.trackSocial = function(opt_pageUrl, opt_trackerName) {
  _ga.trackFacebook(opt_pageUrl, opt_trackerName);
  _ga.trackTwitter(opt_pageUrl, opt_trackerName);
};

_ga.trackFacebook = function(opt_pageUrl, opt_trackerName) {
  var trackerName = _ga.buildTrackerName_(opt_trackerName);
  try {
    if (FB && FB.Event && FB.Event.subscribe) {
      FB.Event.subscribe('edge.create', function(targetUrl) {
        _gaq.push([trackerName + '_trackSocial', 'facebook', 'like',
            targetUrl, opt_pageUrl]);
      });
      FB.Event.subscribe('edge.remove', function(targetUrl) {
        _gaq.push([trackerName + '_trackSocial', 'facebook', 'unlike',
            targetUrl, opt_pageUrl]);
      });
      FB.Event.subscribe('message.send', function(targetUrl) {
        _gaq.push([trackerName + '_trackSocial', 'facebook', 'send',
            targetUrl, opt_pageUrl]);
      });
    }
  } catch (e) {}
};


_ga.buildTrackerName_ = function(opt_trackerName) {
  return opt_trackerName ? opt_trackerName + '.' : '';
};


_ga.trackTwitter = function(opt_pageUrl, opt_trackerName) {
  var trackerName = _ga.buildTrackerName_(opt_trackerName);
  try {
    if (twttr && twttr.events && twttr.events.bind) {
      twttr.events.bind('tweet', function(event) {
        if (event) {
          var targetUrl; // Default value is undefined.
          if (event.target && event.target.nodeName == 'IFRAME') {
            targetUrl = _ga.extractParamFromUri_(event.target.src, 'url');
          }
          _gaq.push([trackerName + '_trackSocial', 'twitter', 'tweet',
            targetUrl, opt_pageUrl]);
        }
      });
    }
  } catch (e) {}
};


_ga.extractParamFromUri_ = function(uri, paramName) {
  if (!uri) {
    return;
  }
  var uri = uri.split('#')[0];  // Remove anchor.
  var parts = uri.split('?');  // Check for query params.
  if (parts.length == 1) {
    return;
  }
  var query = decodeURI(parts[1]);

  // Find url param.
  paramName += '=';
  var params = query.split('&');
  for (var i = 0, param; param = params[i]; ++i) {
    if (param.indexOf(paramName) === 0) {
      return unescape(param.split('=')[1]);
    }
  }
  return;
};