// JavaScript Document
twttr.events.bind('tweet', function(event) {
    if (event) {
        var targetUrl;
        if (event.target && event.target.nodeName == 'IFRAME') {
            targetUrl = extractParamFromUri(event.target.src, 'url');
        }
        _gaq.push(['_trackSocial', 'twitter', 'tweet', targetUrl]);
    }
});
function extractParamFromUri(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; //no params
    }
 
    var query = decodeURI(parts[1]);
 
    //find the 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]);
        }
    }
}
//facebook
(function() {
    var e = document.createElement('script');
    e.async = true;
    e.src = (document.location.protocol == 'file:' ? 'http:' : document.location.protocol) +              '//connect.facebook.net/en_US/all.js';
    document.getElementById('fb-root').appendChild(e);
}());
window.fbAsyncInit = function() {
    FB.init({xfbml: true});
    FB.Event.subscribe('edge.create', function(targetUrl){
        _gaq.push(['_trackSocial', 'facebook', 'like', targetUrl]);
    });
    FB.Event.subscribe('edge.remove', function(targetUrl){
        _gaq.push(['_trackSocial', 'facebook', 'unlike', targetUrl]);
    });
    FB.Event.subscribe('message.send', function(targetUrl) {
        _gaq.push(['_trackSocial', 'facebook', 'send', targetUrl]);
    });
};