var layer = document.getElementById('videoplayer');	

	this.appendHTML = function(layer, html) {
		layer.innerHTML = layer.innerHTML + html;
	}

	function containsRef(name){
		name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
		var regexS = "[\\?&]"+name+"=([^&#]*)";
		var regex = new RegExp( regexS );
		var results = regex.exec( window.location.href );
	
		if( results == null )
			return "";
		else
			return results[1];
	}
	
	function play_video(guid) {
		
		var videoRef = containsRef('ref');
		var layer = document.getElementById('player');
		
		if( videoRef == "") {
			build_video_player(guid, layer);
		}
		if (videoRef != "" ) {
			build_video_player(videoRef, layer);
		}		
	}
	
	function set_video_active(guid){
		var layer = document.getElementById('player');
				
		layer.innerHTML = "";
		build_video_player(guid, layer);
	}
	
	function build_video_player(guid, layer) {
		
		if(!videos[guid]){
			var html = "Video niet gevonden.";
		} else {
			var html = videos[guid];
		}
		
		this.appendHTML(layer, html);
	}