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    <p>Use CSS to set both the Width and Height of the image to 100% and the image will be automatically stretched to fill the containing div, without the need for jquery. </p> <p>Also, you will not need to center the image as it will already be stretched to fill the div (centered with zero margins).</p> <p>HTML:</p> <pre><code>&lt;div id="containingDiv"&gt; &lt;img src=""&gt; &lt;/div&gt; </code></pre> <p>CSS:</p> <pre><code>#containingDiv{ width: 200px; height: 100px; } #containingDiv img{ width: 100%; height: 100%; } </code></pre> <p>That way, if your users have javascript disabled, the image will still be stretched to fill the entire div width/height.</p> <p>OR</p> <p>The JQuery way (SHRINK/STRETCH TO FIT - INCLUDES WHITESPACE):</p> <pre><code>$('img.shelf-img').each(function(i, item) { var img_height = $(item).height(); var div_height = $(item).parent().height(); if(img_height&lt;div_height){ //IMAGE IS SHORTER THAN CONTAINER HEIGHT - CENTER IT VERTICALLY var newMargin = (div_height-img_height)/2+'px'; $(item).css({'margin-top': newMargin }); }else if(img_height&gt;div_height){ //IMAGE IS GREATER THAN CONTAINER HEIGHT - REDUCE HEIGHT TO CONTAINER MAX - SET WIDTH TO AUTO $(item).css({'width': 'auto', 'height': '100%'}); //CENTER IT HORIZONTALLY var img_width = $(item).width(); var div_width = $(item).parent().width(); var newMargin = (div_width-img_width)/2+'px'; $(item).css({'margin-left': newMargin}); } }); </code></pre> <p>The JQuery way - CROP TO FIT (NO WHITESPACE):</p> <pre><code>$('img.shelf-img').each(function(i, item) { var img_height = $(item).height(); var div_height = $(item).parent().height(); if(img_height&lt;div_height){ //INCREASE HEIGHT OF IMAGE TO MATCH CONTAINER $(item).css({'width': 'auto', 'height': div_height }); //GET THE NEW WIDTH AFTER RESIZE var img_width = $(item).width(); //GET THE PARENT WIDTH var div_width = $(item).parent().width(); //GET THE NEW HORIZONTAL MARGIN var newMargin = (div_width-img_width)/2+'px'; //SET THE NEW HORIZONTAL MARGIN (EXCESS IMAGE WIDTH IS CROPPED) $(item).css({'margin-left': newMargin }); }else{ //CENTER IT VERTICALLY (EXCESS IMAGE HEIGHT IS CROPPED) var newMargin = (div_height-img_height)/2+'px'; $(item).css({'margin-top': newMargin}); } }); </code></pre>
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    1. CO[Fiddle](http://jsfiddle.net/X8czt/1/)
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    2. CO@RustyTheBoyRobot: From the OP's post `"... completely filling the div (even if this means stretching the image)!"`
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    3. CONo prob bob, wish OP's wouldn't vanish after asking questions though. Would have liked to know if my suggestion helped.
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