h1
{
     list-style-type: disc;
}

h2
{
    list-style-type: square;
    list-style-position: inside;
}

h3
{
    list-style-type: square;
    list-style-position: outside;
}

h4
{
    list-style-type: upper-roman;
}

h5
{
    list-style-type: upper-alpha;
}

h6
{
    list-style-image: url(glasses.gif);
}