//Global Variables
var totalClicks = 0;
var clicks = 0;
var matches = 0;
var numPairs = 0; //only 1 of these
var numCards = 0;
var firstUncovered;
var firstUncoveredId;
var secondUncovered;
var secondUncoveredId;
var first;
var second;
var images=new Array("images/1.jpg", "images/1.jpg","images/2.jpg","images/2.jpg",
"images/3.jpg","images/3.jpg", "images/4.jpg", "images/4.jpg",
"images/5.jpg", "images/5.jpg", "images/6.jpg", "images/6.jpg",
"images/7.jpg", "images/7.jpg","images/8.jpg","images/8.jpg",
"images/9.jpg","images/9.jpg", "images/10.jpg", "images/10.jpg",
"images/11.jpg", "images/11.jpg", "images/12.jpg", "images/12.jpg");
var back="back.jpg";
function uncover(card){
if(clicks == 2) return false;
totalClicks++;
clicks++;
if(clicks == 1){
firstUncoveredId = card.id;
first = document.getElementById(firstUncoveredId);
firstUncovered = card.src = images[firstUncoveredId];
first.onclick = null;
};
if(clicks == 2){
tries++;
secondUncoveredId = card.id;
second = document.getElementById(secondUncoveredId);
secondUncovered = card.src = images[secondUncoveredId];
if(firstUncovered == secondUncovered){
first.className = "dimmed";
second.className = "dimmed";
first.onclick = second.onclick = null;
clicks = 0;
matches++;
}
if(matches == (numCards/2)){
alert("gameover");
}
}
}
/*
var id=card.getAttribute('id');
card.setAttribute('src', images[id]);
card.setAttribute('onclick', null);
*/
setTimeout(function(){
hide(current, last)}, 1000);
function prepareGameboard(){
var input=0;
var j;
var numCards=24;
var board;
if (!document.getElementsByTagName) return false;
if (!document.getElementById) return false;
if (!document.getElementById("gameboard")) return false;
var randomNum;
var temp;
var i;
for(var i=0;i<numCards;i++)
{
randomNum=Math.floor((Math.random() * numCards));
temp=images[randomNum];
images[randomNum]=images[i];
images[i]=temp;
}
board=document.getElementById('gameboard');
for(var i=0;i<numCards;i++){
var cardImage=new Image();
cardImage.setAttribute('alt', ('card'+i));
cardImage.setAttribute('id',i);
cardImage.setAttribute('src' , 'back.jpg');
cardImage.onclick=function(){
return uncover(this);
};
board.appendChild(cardImage);
};
};
function addLoadEvent(func)
{
var oldonload = window.onload;
if (typeof window.onload != 'function')
{
window.onload = func;
}
else
{
window.onload = function()
{
oldonload();
func();
}
}
}
addLoadEvent(prepareGameboard);