window.onload = initAll;
var usedNums = new Array(76);

function initAll() {
	if(document.getElementById) {
		document.getElementById("reload").onclick=anotherCard;
		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) {
	var currSquare = "square" + thisSquare;
	var colPlace = new
	Array(0,1,2,3,4,0,1,2,3,4,0,1,3,4,0,1,2,3,4,0,1,2,3,4);
	var colBasis = colPlace[thisSquare] * 15;
	var newNum;
	
	do {
		newNum = colBasis + getNewNum() + 1;
		}
    while (usedNums[newNum])
	
		usedNums[newNum] = true;
		document.getElementById(currSquare).innerHTML = newNum;
	}
function getNewNum() {
    return Math.floor(Math.random() * 15);	
}

function anotherCard() {
	for (var i=1; i<usedNums.length; i++){
		usedNums[i] = false;
	}

newCard();
return false;
}