var usedWords;
window.onload = initAll;

function initAll() {
	if (document.getElementById) {
		document.getElementById("reload").onclick = anotherCard;
		usedWords = new Array(buzzwords.length);
		// Hack to only do things if IE or not IE
		if (!document.getElementById("IEroot")) {
			setFree();
		}
		newCard();
	}
	else {
		alert("Sorry, your browser doesn't support this script");
	}
}

function newCard() {
	for (var i=0; i<24; i++) {
		setSquare(i);
	}
}

function setSquare(thisSquare) {
	do {
		var randomWord = Math.floor((Math.random() * buzzwords.length));
	}
	while (usedWords[randomWord]);

	usedWords[randomWord] = true;
	var currSquare = "square" + thisSquare;
	document.getElementById(currSquare).innerHTML = buzzwords[randomWord];
	document.getElementById(currSquare).className = "";
	document.getElementById(currSquare).onmousedown = toggleColor;
}

function anotherCard() {
	for (var i=0; i<buzzwords.length; i++) {
		usedWords[i] = false;
	}
	newCard();
	return false;
}

function toggleColor(evt) {
	var thisSquare = (evt) ? evt.target : window.event.srcElement;
	thisSquare.className = (thisSquare.className == "") ? "pickedBG" : "";
	checkWin();
}

function checkWin() {
	var winningOption = -1;
	var setSquares = 0;
	var winners = new Array(31,992,15360,507904,541729,557328,1083458,2162820,4329736,8519745,8659472,16252928);

	for (var i=0; i<24; i++) {
		var currSquare = "square" + i;
		if (document.getElementById(currSquare).className != "") {
			document.getElementById(currSquare).className = "pickedBG";
			setSquares = setSquares | Math.pow(2,i);
		}
	}

	for (var i=0; i<winners.length; i++) {
		if ((winners[i] & setSquares) == winners[i]) {
			winningOption = i;
		}
	}
	
	if (winningOption > -1) {
		for (var i=0; i<24; i++) {
			if (winners[winningOption] & Math.pow(2,i)) {
				currSquare = "square" + i;
				document.getElementById(currSquare).className = "winningBG";
			}
		}
	}
}