html - Pop up image css link on hover -

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i trying use following technique http://www.dynamicdrive.com/style/csslibrary/item/css-image-gallery/ create pop image hover effect dynamically generating php. have 1 problem technique every single image downloaded when page loads. how can have css download image on hover.? right css pushing images off screen when page loads (left: -1000px;) brings them view on hover.is possible css accomplish other choices have?

instead of setting img src attribute link. set attribute data-src link. when hover set src of image data-src attribute. browser load in then.


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