Request.Twitter = new Class({
	Extends: Request.JSONP,

	options: {
		linkify: true,
		url: 'http://api.twitter.com/1/statuses/user_timeline.json',
		data: {
			count: 5
		}
	},
	
	initialize: function(options){
		this.parent(options);
	},
	
	success: function(data, script){
		// keep subsequent calls newer
		if (data[0]) {
			this.options.data.since_id = data[0].id;
		}
		
		this.parent(data, script);
	}
});