chooseActivity()

function chooseActivity() {
            m = 0;
            n = 0;
            commaAmount = 0;
            options = [];
            input = document.getElementById("txtInput").value;
            for (var i = 0; i < input.length; i++) {
                if (input.charAt(i) == ",") {
                    commaAmount++;
                    }
                }
            for (var j = 0; j < commaAmount + 1; j++) {
                options[j] = "";
                }
            for (n = 0; n < input.length; n++) {
                if ((input.charAt(n) == ",") && (input.charAt(n + 1) == " ")) {
                    n++;
                    m++;
                    }
                else {
                    options[m] += input.charAt(n);
                    }
                }
            output = options[Math.floor(Math.random() * options.length)];
            document.getElementById("divOutput").innerHTML = output;
        }