Navilsor,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<script>
var base = {
1: {
src: "http://javascript.ru/forum/images/smilies/victory.gif",
price: 5900
},
2: {
src: "http://javascript.ru/forum/images/smilies/dance3.gif",
price: 6900
},
3: {
src: "http://javascript.ru/forum/images/smilies/cray.gif",
price: 7900
}
};
function changeImage(form) {
document.images["pic"].src = base[form.value].src;
document.getElementById("mydiv").innerHTML = base[form.value].price;
form.value = 0
};
</script>
</head>
<body>
<form>
<img name="pic" src="http://javascript.ru/forum/images/smilies/victory.gif" alt=""></br>
<select size=1 name="imagename" onChange="changeImage(this)" id="price">
<option value="0">Выбрать</option>
<option value="1">Картинка 1</option>
<option value="2">Картинка 2</option>
<option value="3">Картинка 3</option>
</select>
<div id="mydiv">5900</div>
</form>
</body>
</html>