[SkyLight]

<select id="select" onchange="selectImage()">
	<option value="image1.gif">inage1.gif</option>
	<option value="image2.gif">inage2.gif</option>
	<option value="image3.gif">inage3.gif</option>
</select>

<script type="text/javascript">
function selectImage() {
	var select = document.getElementById('select');
	var name = select.options[select.selectedIndex].value;
	alert('Будет загружена картинка из "' + name + '"');
}
</script>