var isNav4, isIE4
var range = ""
var styleObj = ""
if (navigator.appVersion.charAt(0) == "4") {
	if (navigator.appName == "Netscape") {
		isNav4 = true
	} else {
		isIE4 = true
		range = ".all"
		styleObj = ".style"
	}
}
function mostrarDatos() {
	eval("document" + range + ".esperaNew" + styleObj + ".visibility = 'hidden'")
	eval("document" + range + ".contenido" + styleObj + ".visibility = 'visible'")
    return false;
}

// Java Memory (5x4)
var tiempo_espera_vista_rapida = 4 //tiempo en segundos
var opened = 1;
var closed = 2;
var blanked = 3;
var progress
var compare;
var timeID;
var compare_cell;
var compare_cell2;
var round;
var time_count;
var ran;
var pair;
var min_round = 1000;
var min_time = 1000;
var best_round = 999;
var best_time = 999;

var clock;

card_index = new Array;
card_status = new Array;
picture = new Array;


function precarga(carpeta)
{
	GateImg = new Image(65,65);
    GateImg.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/Tapa.gif";
    CacheImg0 = new Image(65,65);
    CacheImg0.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image0.gif";
    CacheImg1 = new Image(65,65);
    CacheImg1.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image1.gif";
    CacheImg2 = new Image(65,65);
    CacheImg2.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image2.gif";
    CacheImg3 = new Image(65,65);
    CacheImg3.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image3.gif";
    CacheImg4 = new Image(65,65);
    CacheImg4.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image4.gif";
    CacheImg5 = new Image(65,65);
    CacheImg5.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image5.gif";
}


function asignarImg(carpeta)
{
	GateImg = new Image(65,65);
    GateImg.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/Tapa.gif";
    CacheImg0 = new Image(65,65);
    CacheImg0.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image0.gif";
    CacheImg1 = new Image(65,65);
    CacheImg1.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image1.gif";
    CacheImg2 = new Image(65,65);
    CacheImg2.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image2.gif";
    CacheImg3 = new Image(65,65);
    CacheImg3.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image3.gif";
    CacheImg4 = new Image(65,65);
    CacheImg4.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image4.gif";
    CacheImg5 = new Image(65,65);
    CacheImg5.src = "./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image5.gif";
	initialize(carpeta);
}

var timerVistazo;

function echarVistazo()
{
	if (timerVistazo==null)
	{
		timerVistazo=setTimeout('echarVistazo()', tiempo_espera_vista_rapida*1000);
		for (i=0; i<20; i++) 
			open_cell(i) 
	}
	else
	{
		for (i=0; i<20; i++) 
			close_cell(i) 
		// Quitamos el crono de espera de muestra rápida
		clearTimeout(timerVistazo);
		// Iniciamos el reloj contador de tiempo
		clock=setTimeout("timer()",1000);
		timerVistazo = null;
	}
}

function initialize(carpeta) 
{
	for (i=0; i<20; i++) 
	{
		document["cell_" + i].width=65;
		document["cell_" + i].height=65;
		document["cell_" + i].border=0;
		card_status[i] = closed;
		card_index[i] = -1;
	}

	for (i=0; i<10; i++) 
	{
		j = 0 ;
		while ( j < 2)
		{
			ran = Math.floor(24 * Math.random());
			if (card_index[ran] == -1) 
			{
				card_index[ran] = i;
				j++;
			}
		}
	}
	
	for (i=0; i<20; i++) 
	{
		picture[i]="./imagenes/ocio_imagenes/img_memory/" + carpeta + "/image"+card_index[i]+".gif";
	}
	// Hacemos una preview rapida para dar pistas
	echarVistazo();

	round = 1;
	time_count =0;
	pair = 0;
	progress = 0;

	document.form1.round.value=round;
	document.form1.time.value=60 + time_count;
}

function timer() 
{

	time_count++;
	document.form1.time.value=60 - time_count;
	if (document.form1.time.value==0)
	{
		alert("Inténtalo otra vez");
		history.go(0);
	}
	else
		clock=setTimeout("timer()",1000);
}


function choose(card_id) 
{
	if (progress == 0 && card_status[card_id] == closed) 
	{
		progress = 1;
		card_status[card_id] = opened;
		open_cell(card_id);
		compare = card_index[card_id];
		compare_cell = card_id;
	}
	
	if (progress ==1 && card_status[card_id] == closed) 
	{
		progress =2;
		card_status[card_id] = opened;
		open_cell(card_id);
		compare_cell2 = card_id;
		if (card_index[card_id] == compare) 
		{
			timeID=setTimeout("match()",1000);
		}
		else 
		{
			timeID=setTimeout("unmatch()",1000);
		}
	}
}
		
function match() 
{
	blank_cell(compare_cell);
	blank_cell(compare_cell2);
	card_status[compare_cell] = blanked;
	card_status[compare_cell2] = blanked;
	progress=0;
	pair++;
	if (pair == 10) 
	{
		alert("Acabaste en "+round+" jugadas en "+time_count+" segundos.");
		if ( round < min_round) min_round = round;
		if ( time_count < min_time) min_time = time_count;
	}
}

function unmatch() 
{
	close_cell(compare_cell);
	close_cell(compare_cell2);
	card_status[compare_cell] = closed;
	card_status[compare_cell2] = closed;
	progress=0;
	round++;
	document.form1.round.value=round;
}

function showcard() 
{
	
	clearTimeout(clock);
	clearTimeout(timeID);

	for (i=0; i<24; i++) 
	{
		if (card_status[i]==closed)
		{
			card_status[i] = opened;
			open_cell(i);
		}
	}
}


function open_cell(cell_id) 
{
	document["cell_"+cell_id].src = picture[cell_id];
}

function close_cell(cell_id) 
{
	document["cell_"+cell_id].src = GateImg.src;
}

function blank_cell(cell_id) 
{
	document["cell_"+cell_id].width=60;
	document["cell_"+cell_id].height=60;
	document["cell_"+cell_id].border=4;
}

function restart(carpeta) 
{
	if (timerVistazo!=null)
	{
		clearTimeout(timerVistazo);
		timerVistazo = null;
	}
	clearTimeout(clock);
	clearTimeout(timeID);
	for (r=0; r<20; r++) 
	{
		document["cell_"+r].src = GateImg.src;
	}
	initialize(carpeta);
}

function checkRecord() 
{
	if ( min_round >= best_round && min_time >= best_time) 
	{
		alert("No has batido el record");
		return false;
	}
}