function setupTypewriter(t) {

var HTML = t.innerHTML;

t.innerHTML = "";

var cursorPosition = 0,
    tag = "",
    writingTag = false,
    tagOpen = false,
    typeSpeed = 100,
tempTypeSpeed = 0;

var type = function() {

    if (writingTag === true) {
        tag += HTML[cursorPosition];
    }

    if (HTML[cursorPosition] === "<") {
        tempTypeSpeed = 0;
        if (tagOpen) {
            tagOpen = false;
            writingTag = true;
        } else {
            tag = "";
            tagOpen = true;
            writingTag = true;
            tag += HTML[cursorPosition];
        }
    }
    if (!writingTag && tagOpen) {
        tag.innerHTML += HTML[cursorPosition];
    }
    if (!writingTag && !tagOpen) {
        if (HTML[cursorPosition] === " ") {
            tempTypeSpeed = 0;
        }
        else {
            tempTypeSpeed = (Math.random() * typeSpeed) + 50;
        }
        t.innerHTML += HTML[cursorPosition];
    }
    if (writingTag === true && HTML[cursorPosition] === ">") {
        tempTypeSpeed = (Math.random() * typeSpeed) + 50;
        writingTag = false;
        if (tagOpen) {
            var newSpan = document.createElement("span");
            t.appendChild(newSpan);
            newSpan.innerHTML = tag;
            tag = newSpan.firstChild;
        }
    }

    cursorPosition += 1;
    if (cursorPosition < HTML.length - 1) {
        setTimeout(type, tempTypeSpeed);
    }

};

return {
    type: type
};

}

var typer = document.getElementById('typewriter');

typewriter = setupTypewriter(typewriter);

typewriter.type();