AlphaKeloid,
<!DOCTYPE HTML>
<html>
<head>
<title>Unvalued</title>
<meta charset="utf-8">
<style type="text/css">
.over_ch{
display: none;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script>
$(function() {
$("select").change(function() {
var i = $("select").index(this);
var src = this.value;
$(".images img").eq(i)[0].src = src;
src = {
light: "img/light.png",
dark: "img/dark.png"
}[$(this).find("option:selected").data("name")];
src && ($(".images img").last()[0].src = src)
});
$(".over").click(function() {
$(".over_ch").toggle()
})
});
</script>
</head>
<body>
<div class="">
<div class="controller">
<select>
<option value="img/1/some0.png">0</option>
<option value="img/1/some1.png">1</option>
<option value="img/1/some2.png">2</option>
</select>
</div>
<div class="controller">
<select>
<option data-name="light" value="img/2/some0.png">0</option>
<option data-name="light" value="img/2/some1.png">1</option>
<option data-name="dark" value="img/2/some2.png">2</option>
<option data-name="dark" value="img/2/some3.png">3</option>
<option data-name="light" value="img/2/some4.png">4</option>
<option data-name="dark" value="img/2/some5.png">5</option>
<option data-name="light" value="img/2/some6.png">6</option>
</select>
</div>
<div class="controller">
<select>
<option value="img/3/some0.png">0</option>
<option value="img/3/some1.png">1</option>
<option value="img/3/some2.png">2</option>
<option value="img/3/some3.png">3</option>
<option value="img/3/some4.png">4</option>
<option value="img/3/some5.png">5</option>
<option value="img/3/some6.png">6</option>
<option value="img/3/some7.png">7</option>
</select>
</div>
<div class="images">
<div class="null">
<img name="pic1" src="img/1/some0.png" >
</div>
<div name="null">
<img name="pci2" src="img/2/some0.png" >
</div>
<div class="null">
<img name="pic3" src="img/3/some0.png" >
</div>
<div>
<img class="over_ch" src="img/transparent.png" >
</div>
</div>
<input type="button" class="over" value="Toggle"/>
</div>
</body>
</html>