var text = "", count = -1;
function textType () {
    if(!document.getElementById) return;
    var obj = document.getElementById("msg");
    if(!text) text = obj.firstChild.nodeValue;
    if(count >= 0) {
        obj.firstChild.nodeValue = 
                         text.substr(0, count + 1);
        obj.style.color = "blue";
    }
    count++;
    if(count < text.length)
        setTimeout("textType();", 200);
}

if(document.getElementById) {
    document.write("<style type='text/css'>");
    document.write("c1 { color: black; }");
    document.write("</style>");
}