Hi,
As per I understand your query, I try to solve it. Background color is represent your image.
Here is code and link as well
http://jsfiddle.net/KD2HL/[
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html structure:
<div class="img-wrapper">
<span class="image-1">
</span>
<span class="image-2">
</span>
<span class="image-3">
</span>
</div>
CSS
.img-wrapper{border:1px solid black;position:absolute;width:360px; height:260px}
.image-1{background:red; position:absolute; top:0px;left:0px; width:300px; height:200px}
.image-2{background:green; position:absolute; top:30px;left:30px;width:300px; height:200px}
.image-3{background:blue; position:absolute; top:60px;left:60px;width:300px; height:200px}