/*
 * Copyright (c) 2008 Aza Raskin (http://azarask.in/blog)
 * Modified version for Google Analytics
 */

function ch() {
	if (typeof(pageTracker._getVisitorCustomVar(1)) == "undefined") {
		mg();
	}
}

function mg() {
	var sl = SocialHistory();
	var ver = sl.checkedSites();
	var cats = {"Meta":0, "Shop":0, "SocM":0,  "SERP":0, "Medi":0,};
	
	for (var site = 0, len=ver.length; site < len; ++site) {
		var sname = ver[site];
		var cat = sname.substr(0,4);

		var t = 'Not';
		if (sl.doesVisit(sname)) {
			t = 'Visited';
			cats[cat]++;
		}

		sname = sname.substr(4);
		pageTracker._trackEvent('Visit' + cat, sname, t);
	}
	
	var ci = 0;
	var bs = '';
	for (var cat in cats) {
		var t = 'N';
		if (cats[cat] > 0) { t = 'V'; }
		bs = bs + cat + t + '.';
		ci = ci + cats[cat];
	}

	pageTracker._setCustomVar(1, 'VisitInfo', bs, 1);
	pageTracker._trackEvent('Visit Count', 'All', 'Sites Visited', ci);
}


var SocialHistory = function( moreSites ){

  var sites = {
	"SocMFacebook": ["http://facebook.com/home.php", "http://facebook.com", "https://login.facebook.com/login.php"],
	"SocMTwitter": ["http://twitter.com/", "http://www.twitter.com/vandiene"],
	"MediHappysocks": ["http://happysocks.com/"],
	"MediTailorstore": ["http://tailorstore.se/"],
	"MediParfym": ["http://parfym.se/"],
	"MediTravelpartner": ["http://travelpartner.se/"]

  };
  
  for( var site in moreSites ) {
    // If we don't have the site, create the URL list.
    if( typeof( sites[site] ) == "undefined" ) sites[site] = [];
    
    // If the value is string, just push that onto the URL list.
    if( typeof( moreSites[site] ) == "string" )
      sites[site].push( moreSites[site] );
    else
      sites[site] = sites[site].concat( moreSites[site] );
  }
  
  var visited = {};
  
  function getStyle(el, scopeDoc,styleProp) {
    if (el.currentStyle)
      var y = el.currentStyle[styleProp];
    else if (window.getComputedStyle)
      var y = scopeDoc.defaultView.getComputedStyle(el,null).getPropertyValue(styleProp);
    return y;
  }
  
  function remove( el ) {
    el.parentNode.removeChild( el );
  }
  
  // Code inspired by:
  // bindzus.wordpress.com/2007/12/24/adding-dynamic-contents-to-iframes
  function createIframe() {
    var iframe = document.createElement("iframe");
    iframe.style.position = "absolute";
    iframe.style.visibility = "hidden";

    document.body.appendChild(iframe);

    // Firefox, Opera
    if(iframe.contentDocument) iframe.doc = iframe.contentDocument;
    // Internet Explorer
    else if(iframe.contentWindow) iframe.doc = iframe.contentWindow.document;

    // Magic: Force creation of the body (which is null by default in IE).
    // Also force the styles of visited/not-visted links.
    iframe.doc.open();
  	iframe.doc.write('<style>');
  	iframe.doc.write("a{color: #000000; display:none;}");  	
  	iframe.doc.write("a:visited {color: #FF0000; display:inline;}");  	
  	iframe.doc.write('</style>');
    iframe.doc.close();
    
    // Return the iframe: iframe.doc contains the iframe.
    return iframe;
  }  

  var iframe = createIframe();
  
  function embedLinkInIframe( href, text ) {
    var a = iframe.doc.createElement("a");
    a.href = href;
    a.innerHTML = site;
    iframe.doc.body.appendChild( a );
  }
  
  for( var site in sites ) {
    var urls = sites[site];
    for( var i=0; i<urls.length; i++ ) {
      // You have to create elements in the scope of the iframe for IE.
      embedLinkInIframe( urls[i], site );
      
      // Automatically try variations of the URLS with and without the "www"
      if( urls[i].match(/www\./) ){
        var sansWWW = urls[i].replace(/www\./, "");
        embedLinkInIframe( sansWWW, site );
      } else {
        // 2 = 1 for length of string + 1 for slice offset
        var httpLen = urls[i].indexOf("//") + 2;
        var withWWW = urls[i].substring(0, httpLen ) + "www." + urls[i].substring( httpLen );
        embedLinkInIframe( withWWW, site );
      }
      
    }
  }
    
  var links = iframe.doc.body.childNodes;
  for( var i=0; i<links.length; i++) {
    // Handle both Firefox/Safari, and IE (respectively)
    var displayValue = getStyle(links[i], iframe.doc, "display");
    var didVisit = displayValue != "none";
      
    if( didVisit ){
      visited[ links[i].innerHTML ] = true;
    }
  }
  
  remove( iframe );
  
  return new (function(){
    var usedSites = [];
    for( var site in visited ){
      usedSites.push( site );
    }
    
    // Return an array of visited sites.
    this.visitedSites = function() {
      return usedSites;
    }
    
    // Return true/false. If we didn't check the site, return -1.
    this.doesVisit = function( site ) {
      if( typeof( sites[site] ) == "undefined" )
        return -1;
      return typeof( visited[site] ) != "undefined";
    }
    
    var checkedSites = [];
    for( var site in sites ){
      checkedSites.push( site );
    }
    // Return a list of the sites checked.
    this.checkedSites = function(){
      return checkedSites;
    }
  })();
}