gistfile1.txt

<firebase-collection  id="firebaseCollection" 
                          data="{{videos}}"
                          location="https://deejay.firebaseio.com/playqueues/hansenbar"
                          order-by-child="score"
                          on-firebase-value="firebaseValue"
                          log="true">
    </firebase-collection>
    
    <template is="dom-repeat" items="[[videos]]">
      <song-card playing="[[item.playing]]">
      	<span>[[item.score]]</span>
      	<span>[[item.title]]</span>
      	<iron-icon icon="thumb-down" on-tap="voteDown"></iron-icon>
      	<span>[[item.votedown]]</span>
    		<iron-icon icon="thumb-up" on-tap="voteUp"></iron-icon>
    		<span>[[item.voteup]]</span>
      </song-card>      
    </template>
    
    voteUp: function(e){
			  ref = this.$.firebaseCollection.query.ref();
		    var target = ref.child(e.model.item.__firebaseKey__);
		    target.update({"voteup": (e.model.item.voteup || 0) + 1, "score": (e.model.item.score || 0) + 1});
			},
			voteDown: function(e){
			  ref = this.$.firebaseCollection.query.ref();
		    var target = ref.child(e.model.item.__firebaseKey__);
		    target.update({"votedown": (e.model.item.votedown || 0) + 1, "score": (e.model.item.score || 0) - 1});
			},