<html>
<head>
<style type="text/css">
img.normal
{
height: auto
}
img.big
{
height: 160px
}
img.small
{
height: 30px
}
</style>
</head>
<body>
<img class="normal" src="/static/demo/images/eg_smile.gif" />
<br />
<img class="big" src="/static/demo/images/eg_smile.gif" />
<br />
<img class="small" src="/static/demo/images/eg_smile.gif" />
</body>
</html>