$(document).ready(function() {
    var derp = prompt("Choose the length of the sides, which is in the set 2^n!");
    buildBlocks(derp, delayAlert());


});

function buildBlocks(derp, callback) {
    setTimeout(function() {
        var complete;
        for (var i = 0; i < derp; i++) {
            $("#main").append("<div class='row text-center' id='row" + i + "'>");
            for (var j = 0; j < derp; j++) {
                $("#row" + i).append("<div class='block'></div>");
            }
            $("#main").append("</div>");
            if (typeof callback == 'function')
                callback();
        }
    }, 10);
};

function delayAlert() {
    setTimeout('alert("Click to on a block to create a hole in the grid!");', 100);
};