var MATCHES_SELECTOR = [
        'webkitMatchesSelector', 
        'mozMatchesSelector', 
        'matchesSelector'
    ].filter(function(name){
        return this[name];
    }, doc.body)[0];

    var TPL_CARD = '<div class="front">{{contents}}</div>';

    var clickEvents = {
        '.card, .card *': function(){
            var sender = this;
        }
    };


delegate(doc.body, 'click', clickEvents);

function delegate(elm, subject, table){
        var selectors = Object.keys(table);
        elm.addEventListener(subject, function(e){
            var target = e.target;
            selectors.forEach(function(selector){
                if (target[MATCHES_SELECTOR](selector)) {
                    this[selector].call(target, e);
                }
            }, table);
        });
    }