var captionLength = 0;
var caption = "";

function testTypingEffect() {
    caption = $("input#userCaption").val();
    type();
}

function type() {
    $('p.caption').html(caption.substr(0, captionLength++));
    if (captionLength < caption.length + 1) {
        setTimeout("type()", 200);
    }
    else {
        captionLength = 0;
        caption = "";
    }
}