plugin01.js

$.fn.decide = function(options){
	this.each(function(){
		var settings = $.extend({str: "default"}, options);
		var decision = $(this);
		var getdata = $.ajax(decision.attr('href'), {
			type: 'POST', dataType: 'json', data: decision.data('params')
		});
		decision.on('click', function(e){
			e.preventDefault();
			getdata.done(function(result){
				if (typeof(result) === "number") {
					popup.setContent(settings.str);
					popup.params.userid = decision.data("id");
					popup.show();
				}
			});
		});
	});
};

$(".approve").decide({str: "..."});
$(".reject").decide({str: "..."});