;(function( $ ){
	$.fn.captcha = function(options){	
	var defaults = {  
	   borderColor: "",  
	   captchaDir: "http://vstore.com.vn/public/captcha/captcha",  
	   url: "http://vstore.com.vn/public/captcha/captcha/captcha.php",  
	   formId: "register_form",  
	   text: "Để hoàn thiện việc đăng ký, bạn hãy di chuyển <span class='span_captcha'>scissors</span> vào vòng tròn.",
	   items: Array("Bút chì", "Cái kéo", "Đồng hồ", "Trái tim", "Quyển sách","Nốt nhạc") 
	  };	
	
	var options = $.extend(defaults, options);
	
	options.items.splice(randomNumber(options.items.length),1);
	 
	$(this).html("<img class='ajax-fc-border' id='ajax-fc-left' src='" + options.captchaDir + "/imgs/border-left.png' /><img class='ajax-fc-border' id='ajax-fc-right' src='" + options.captchaDir + "/imgs/border-right.png' /><div id='ajax-fc-content'><div id='ajax-fc-left'><p id='ajax-fc-task'>" + options.text + "</p><ul id='ajax-fc-task'><li class='ajax-fc-0'><img src='" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-1'><img src='" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-2'><img src='" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-3'><img src='" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-4'><img src='" + options.captchaDir + "/imgs/item-none.png' alt='' /></li></ul></div><div id='ajax-fc-right'><p id='ajax-fc-circle'></p></div></div><div id='ajax-fc-corner-spacer'></div>");
	var rand = $.ajax({ url: options.url,async: false }).responseText;
	
	var used = Array();
	for(var i=0;i<options.items.length;i++){
		//if(i != rand && i != pic)	
		//{
			$(".ajax-fc-" +i).html( "<img src=\"" + options.captchaDir +"/imgs/item-" + options.items[i] + ".png\" alt=\"\" />");
			used[i] = options.items[i];
		//}
	}
	$(".ajax-fc-" + rand).addClass('ajax-fc-highlighted');
	$(".ajax-fc-" + rand).draggable({ containment: '#ajax-fc-content' });
	$("p#ajax-fc-task span").html(options.items[parseInt(rand)]);
	
	$(".ajax-fc-container, .ajax-fc-rtop *, .ajax-fc-rbottom *").css("background-color", options.borderColor);
	$("#ajax-fc-circle").droppable({
		drop: function(event, ui) {
			$(".ajax-fc-" + rand).draggable("disable");
			$("#" + options.formId).append("<input type=\"hidden\" style=\"display: none;\" name=\"captcha\" value=\"" + rand + "\">");
		},
		tolerance: 'touch'
	});	
	};
	

})( jQuery );

function randomNumber(m) {
	return Math.floor(Math.random()*m);
}