This example demonstrates all the different list-item markers in CSS.
Code:
<html>
<head>
<style type="text/css">
ul.disc {list-style-type: disc}
ul.circle {list-style-type: circle}
ul.square {list-style-type: square}
ul.none {list-style-type: none}
ul.decimal {list-style-type: decimal}
ul.decimal-leading-zero {list-style-type: decimal-leading-zero}
ul.lower-roman {list-style-type: lower-roman}
ul.upper-roman {list-style-type: upper-roman}
ul.lower-alpha {list-style-type: lower-alpha}
ul.upper-alpha {list-style-type: upper-alpha}
ul.lower-greek {list-style-type: lower-greek}
ul.lower-latin {list-style-type: lower-latin}
ul.upper-latin {list-style-type: upper-latin}
ul.hebrew {list-style-type: hebrew}
ul.armenian {list-style-type: armenian}
ul.georgian {list-style-type: georgian}
ul.cjk-ideographic {list-style-type: cjk-ideographic}
ul.hiragana {list-style-type: hiragana}
ul.katakana {list-style-type: katakana}
ul.hiragana-iroha {list-style-type: hiragana-iroha}
ul.katakana-iroha {list-style-type: katakana-iroha}
</style>
</head>

<body>
<ul class="disc">
<li>Disc type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="circle">
<li>Circle type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="square">
<li>Square type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="none">
<li>The "none" type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="decimal">
<li>Decimal type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="decimal-leading-zero">
<li>Decimal-leading-zero type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="lower-roman">
<li>Lower-roman type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="upper-roman">
<li>Upper-roman type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="lower-alpha">
<li>Lower-alpha type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="upper-alpha">
<li>Upper-alpha type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="lower-greek">
<li>Lower-greek type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="lower-latin">
<li>Lower-latin type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="upper-latin">
<li>Upper-latin type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="hebrew">
<li>Hebrew type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="armenian">
<li>Armenian type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="georgian">
<li>Georgian type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="cjk-ideographic">
<li>Cjk-ideographic type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="hiragana">
<li>Hiragana type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="katakana">
<li>Katakana type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="hiragana-iroha">
<li>Hiragana-iroha type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

<ul class="katakana-iroha">
<li>Katakana-iroha type</li>
<li>Tea</li>
<li>Coca Cola</li>
</ul>

</body>
</html>