;(function( $ ){
	$.fn.captcha = function(options){
			
		
	var defaults = {  
	   borderColor: "",  
	   captchaDir: "captcha",  
	   url: "/js/captcha/captcha.php",
	   formId: "comment_form",
	   text: "Arraste <span style='white-space: nowrap;'>a tesoura</span> para o círculo indicado.",
	   items: Array("pencil", "scissors", "clock", "heart", "note"),
           item_pt: Array("o lápis", "a tesoura", "o relógio", "o coração", "a nota musical")
	  };	
	
	var options = $.extend(defaults, options); 

		
	$(this).html("<b class='ajax-fc-rtop'><b class='ajax-fc-r1'></b> <b class='ajax-fc-r2'></b> <b class='ajax-fc-r3'></b> <b class='ajax-fc-r4'></b></b><img class='ajax-fc-border' id='ajax-fc-left' src='/js/" + options.captchaDir + "/imgs/border-left.png' /><img class='ajax-fc-border' id='ajax-fc-right' src='/js/" + 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='/js/" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-1'><img src='/js/" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-2'><img src='/js/" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-3'><img src='/js/" + options.captchaDir + "/imgs/item-none.png' alt='' /></li><li class='ajax-fc-4'><img src='/js/" + 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><b class='ajax-fc-rbottom'><b class='ajax-fc-r4'></b> <b class='ajax-fc-r3'></b> <b class='ajax-fc-r2'></b> <b class='ajax-fc-r1'></b></b>");
	var rand = $.ajax({ url: options.url,async: false }).responseText;
	var pic = randomNumber();

	$(".ajax-fc-" + rand).html( "<img src=\"/js/" + options.captchaDir +"/imgs/item-" + options.items[pic] + ".png\" alt=\"\" />");
	$("p#ajax-fc-task span").html(options.item_pt[pic]);
	$(".ajax-fc-" + rand).addClass('ajax-fc-highlighted');
	$(".ajax-fc-" + rand).draggable({ containment: '#ajax-fc-content' });

	var used = Array();
	for(var i=0;i<5;i++){
		if(i != rand && i != pic)	
		{
			$(".ajax-fc-" +i).html( "<img src=\"/js/" + options.captchaDir +"/imgs/item-" + options.items[i] + ".png\" alt=\"\" />");
			used[i] = options.items[i];
		}
	}
	$(".ajax-fc-container, .ajax-fc-rtop *, .ajax-fc-rbottom *").css("background-color", options.borderColor);
	$("#ajax-fc-circle").droppable({
		drop: function(event, ui) {
                        $("#teste-ok").fadeOut("fast").html("Teste concluído.").fadeIn("slow");
			$(".ajax-fc-" + rand).draggable("disable");
                        $("input[name=captcha]").val(rand);
		},
		tolerance: 'touch'
	});	
	};

})( jQuery );

function randomNumber() {
	var chars = "01234";
	chars += ".";
	var size = 1;
	var i = 1;
	var ret = "";
		while ( i <= size ) {
			$max = chars.length-1;
			$num = Math.floor(Math.random()*$max);
			$temp = chars.substr($num, 1);
			ret += $temp;
			i++;
		}
	return ret;
}