Distributing images evenly & horizontally in a Div via CSS

Use the technique shown in my answer here: Fluid width with equally spaced DIVs

Here it is with your code: http://jsfiddle.net/thirtydot/JTcGZ/

CSS:

#thumbs {   
    width: 540px;
    margin-top:90px;
    margin-left: auto; 
    margin-right: auto;

     text-align: justify;
    -ms-text-justify: distribute-all-lines;
    text-justify: distribute-all-lines;
}
#thumbs a {
    vertical-align: top;
    display: inline-block;
    *display: inline;
    zoom: 1;
}
.stretch {
    width: 100%;
    display: inline-block;
    font-size: 0;
    line-height: 0
}

HTML:

<div id="thumbs">
    <a id="single_image1" href="#"><img src="http://dummyimage.com/150x150/444/fff" alt=""/></a>
    <a id="single_image2" href="#"><img src="http://dummyimage.com/150x150/444/fff" alt=""/></a>
    <a id="single_image3" href="#"><img src="http://dummyimage.com/150x150/444/fff" alt=""/></a>
    <span class="stretch"></span>
</div>​