RWD vert/horz image centering

by John Allan

HTML

<div class="body">
<div class="column">
    <div class="imgWrap">
        <div class="imgInnerWrap">
    <img src="http://www.ivgstores.com/modules/ImageServer.aspx?idProduct=101936&MaxWidth=300&MaxHeight=100" />
    </div></div>
</div>
</div>

CSS

.body {
    width:600px;
    height:800px;
    background:#efefef;
}

.column {
    width:14%;
    height:50px;
    line-height:50px;
    max-height:50px;
    float:left;
    background:#999;
}

.imgWrap {
    position:relative;
    left:50%;
    float:left;
    height:inherit;
    max-height:inherit;
}

.imgInnerWrap {
    float:left;
    position:relative;
    left:-50%;
    height:inherit;
    max-height:inherit;
}

.column img {
    max-width:100%;
    max-height:inherit;
    display:inline;
    vertical-align:middle;
}