function dibujarTabla(){
for (i = 1; i < 10; i++) {
if (i % 3 == 1) {document.write('<Tr>');}
document.write('<Td><Input Type="Button" Name="' + i + '" Value="    " Class="blokje" onClick="wijzig(this.form,this)"></Td>');
if (i % 3 == 0) {document.write('</Tr>');}
}
}


timerID = xtal = ytal = ztal = auto = 0;
wie = 'Player 1';

function initieer(){
	clearTimeout(timerID);
	cel = new Array(0,0,0,0,0,0,0,0,0,0);
	aanv = new Array(); strat = verd = leeg = aanv;
	beurt = wissel = 1; wint = keren = 0;
	document.forms[0].speler1.value = xtal;
	document.forms[0].speler2.value = ytal;
	document.forms[0].remise.value = ztal;
	if (wie != 'Start') {
	for (i in cel) {
			cel[i] = 0; if (i > 0) {document.forms[0].elements[i].value = ''};
			}
	}
	document.forms[0].beurten.value = wie;
}

function zetten() {
    clearTimeout(timerID);
    if (aanv[0] > 0) {
		slag = aanv[Math.floor(Math.random() * 10) % aanv.length]
    } else if (verd[0] > 0) {
		slag = verd[Math.floor(Math.random() * 10) % verd.length];
    } else if (strat[0] > 0) {
		slag = strat[Math.floor(Math.random() * 10) % strat.length];
    } else {
		slag = leeg[Math.floor(Math.random() * 10) % leeg.length];
    }

    if (beurt == 0 && slag > 0) {document.forms[0].elements[slag].click()};
}


function win() {
  if (	cel[1] + cel[2] + cel[3] == 3 ||
	cel[4] + cel[5] + cel[6] == 3 ||
	cel[7] + cel[8] + cel[9] == 3 ||
	cel[1] + cel[4] + cel[7] == 3 ||
	cel[2] + cel[5] + cel[8] == 3 ||
	cel[3] + cel[6] + cel[9] == 3 ||
	cel[1] + cel[5] + cel[9] == 3 ||
	cel[3] + cel[5] + cel[7] == 3 
     ) {
	
	if (confirm("Gana el jugador 1!!\nJugar otra vez?")) 
	{
	wint = 1;
	xtal++; wie = 'Jugador 1'; timerID = setTimeout('initieer()',800)
	} else {
	xtal++; wie = 'Start'; timerID = setTimeout('initieer()',800)
	};
    }  
  if (	cel[1] + cel[2] + cel[3] == 30 ||
	cel[4] + cel[5] + cel[6] == 30 ||
	cel[7] + cel[8] + cel[9] == 30 ||
	cel[1] + cel[4] + cel[7] == 30 ||
	cel[2] + cel[5] + cel[8] == 30 ||
	cel[3] + cel[6] + cel[9] == 30 ||
	cel[1] + cel[5] + cel[9] == 30 ||
	cel[3] + cel[5] + cel[7] == 30
     ) {
	if (confirm(((auto == 1) ? ('Has perdido!!') : ('Gana el jugador 2!!')) + "\nJugar otra vez?")) {
	ytal++; wie = 'Jugador 1'; timerID = setTimeout('initieer()',800)
	} else {
	ytal++; wie = 'Start'; timerID = setTimeout('initieer()',800)	
	};
   } 
}

function wisselen(beurt){
  if (wissel == 1)  {
    if (beurt == 0) {
        beurt = 1;
        wie = "Jugador " + 1
    }
    else {
        if (auto == 0) {beurt = 0;
	wie = "Jugador " + 2} else {beurt = 0; wie = "Ordenador";}
    }
      if (keren == 9
     ) {
	if (confirm("Empate!!!\n\nJugar otra vez?")) {
	ztal++; wie = 'Jugador 1'; timerID = setTimeout('initieer()',800)} else
	{ztal++; wie = 'Start'; timerID = setTimeout('initieer()',800)};
      }

  }
  else {
    beurt = beurt;
  }
  wissel = 1;
  return(beurt);
}

function wijziging(klik) {

plek = cel[klik]; geklikt = klik;

if (plek == 0){
   if (beurt == 0){
	xo = "O";
	plek = 10;
   } else {
	xo = "X";
	plek = 1;
   }
cel[klik] = plek; keren++;
}
else {
   if (plek == 10){
       xo = "O";}
   if (plek == 1){
       xo = "X";}
   wissel = 0
}
return(xo);
}

function verdedig() {leeg = new Array(); verd = new Array();
for (i = 1; i < 10; i++) { oud = cel[i]; cel[i] = 1;
  if ( (cel[1] + cel[2] + cel[3] == 3 ||
	cel[4] + cel[5] + cel[6] == 3 ||
        cel[7] + cel[8] + cel[9] == 3 ||
        cel[1] + cel[4] + cel[7] == 3 ||
        cel[2] + cel[5] + cel[8] == 3 ||
        cel[3] + cel[6] + cel[9] == 3 ||
        cel[1] + cel[5] + cel[9] == 3 ||
        cel[3] + cel[5] + cel[7] == 3) && oud == 0
     ) { verd[verd.length] = i}
   cel[i] = oud; 
   if (cel[i] == 0) {
   if (keren != 1) {leeg[leeg.length] = i} else 
   if (cel[5] == 0) {leeg[0] = 5; leeg[1] = 10 - geklikt} else 
   if (i % 2 != 0) {leeg[leeg.length] = i}
   };
}
}

function aanval() {aanv = new Array();
for (i = 1; i < 10; i++) { oud = cel[i]; cel[i] = 10;
  if ( (cel[1] + cel[2] + cel[3] == 30 ||
	cel[4] + cel[5] + cel[6] == 30 ||
        cel[7] + cel[8] + cel[9] == 30 ||
        cel[1] + cel[4] + cel[7] == 30 ||
        cel[2] + cel[5] + cel[8] == 30 ||
        cel[3] + cel[6] + cel[9] == 30 ||
        cel[1] + cel[5] + cel[9] == 30 ||
        cel[3] + cel[5] + cel[7] == 30) && oud == 0
     ) { aanv[aanv.length] = i}
cel[i] = oud;
}
}

function strategie() {
strat = new Array();
for (i = 1; i < 10; i++) { 
		oud = cel[i]; cel[i] = 10;
  	if ( (cel[1] + cel[2] + cel[3] == 20 ||
			  cel[4] + cel[5] + cel[6] == 20 ||
        cel[7] + cel[8] + cel[9] == 20 ||
        cel[1] + cel[4] + cel[7] == 20 ||
        cel[2] + cel[5] + cel[8] == 20 ||
        cel[3] + cel[6] + cel[9] == 20 ||
        cel[1] + cel[5] + cel[9] == 20 ||
        cel[3] + cel[5] + cel[7] == 20) && oud == 0
    ) { 
     	 if (keren != 3) {strat[strat.length] = i} else if (i % 2 != 0) {strat[strat.length] = i}
     	 }
		cel[i] = oud;
		}
}

function wijzig(form,element){
    wijziging(element.name);
    element.value = xo;
    beurt = wisselen(beurt);
    form.beurten.value = wie;
    verdedig(); aanval(); strategie(); win(); 
    if (auto == 0 || wint == 1) {return} else {
    timerID = setTimeout('zetten()',600)
    }
}

initieer();