[RESOLVED] Image with absolute positioning makes div 2px higher

[stlaural]

Hi Guys I'm having a strange problem with divs, image and positionning I just can't seem to fix it. First here's the divs and content :

<div id="divToolTipsImageZone" class="divToolTipsImageZone">
        <div id="divToolTipsContentZone" class="divToolTipsContentZone">
          <div id="divThumbnailLoadWrapper" class="divThumbnailLoadWrapper">
            <a href="javascript:SetFullPreviewProgressBarIcon(true);" title="Document Title" rel="lightbox-iframe">
              <img id="imgToolTipsQuickFilePreview" border="0" src="_layouts/Images/Alexya/Findability/Preview/icons/white_thumbnail.png"/>
            </a>
          </div>
          <img id="imgThumbnailLoader" src="_layouts/Images/Alexya/Findability/Preview/loaders/spinner.gif" class="ThumbnailLoader" style="border: 0;" border="0"/>
        </div>
      </div>

And here's the important CSS :

.divTootTipsImageZone
{
    position: relative;
}
 
.divThumbnailLoadWrapper
{
    opacity : 0.4;
    filter: alpha(opacity=40); 
    background-color: #000;
    overflow: hidden;
}
 
.ThumbnailLoader
{
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -8px; /* -1 * image width / 2 */
    margin-top: -8px;  /* -1 * image height / 2 */
    display: block;
}

white_thumbnail.png is exactly 100px X 110px and spinner.gif is 16px X 16px.
The problem I'm having is that divThumbnailLoadWrapper size is automatically set to 100px X 112px instead of 100px X 110px So I see a dark gray bar 100px X 2px UNDER the image white_thumbnail.png and as you can see spinner.gif IS NOT a child of divThumbnailLoadWrapper, it is simply positionned to be displayed over it. I do NOT get this problem if I do not show the spinner.gif so I'm pretty sure the problem comes from there :P

So basically, I want to to be able to show the image spinner.gif, I still want id to be absolute positioned to be centered in its parent div but I don't want it to affect divThumbnailLoadWrapper div.

Thanks for any help you can bring!