/**
 * $.fn.twttrintent
 * https://gist.github.com/1148841
 * http://jsfiddle.net/gh/gist/jQuery/1.6.2/1148841/
 * see following about intent api
 * https://dev.twitter.com/docs/intents
 */
$.fn.twttrintent = function(options){
	function attachDataVal($el, attrKey, finalKey, obj){
		var val = $el.data(attrKey);
		if (val === undefined){
			return obj;
		}
		obj[finalKey] = val;
		return obj;
	}
	return this.each(function(){
		var $el = $(this);
		var dataVals = {};
		attachDataVal($el, 'intentText', 'text', dataVals);
		attachDataVal($el, 'intentUrl', 'url', dataVals);
		attachDataVal($el, 'intentHashtags', 'hashtags', dataVals);
		var data = $.extend({}, options, dataVals);
		var paramstr = $.param(data);
		$el.attr('href', $el.attr('href') + '?' + paramstr);
	});
};
/* fire */
$(function(){
	// twitter intent 
	$('.js-twttrintent').twttrintent();
});