Simple Javascript image gallery

DEMO

Click on any four thumbnail images shown bellow.

Javascript Code

<script language="JavaScript">
var path;
function change(path)
{
document.main.src=path;
}
</script>

HTML

<input type="image" src="images/pic1_t.jpg" onClick="change('images/pic1.jpg')"/>
<input type="image" src="images/pic2_t.jpg" onClick="change('images/pic2.jpg')"/>
<input type="image" src="images/pic3_t.jpg" onClick="change('images/pic3.jpg')"/>
<input type="image" src="images/pic4_t.jpg" onClick="change('images/pic4.jpg')"/>

<img src="images/pic1.jpg" name="main"/>