open large image with zoom
I have seen this particular effect in various places - it is used a lot on wikipedia - where you click on an image and get a large version of the image that fills the browser window. When you hover over the larger image, the cursor becomes a magnifying glass that allows you to click and zoom to 100% and back to "fill window" size.
What I think is happening is that the image link just goes to the large version of the image itself (as opposed to another html page), as in
and the browser is handling the hover/zoom effects. I am using Safari and Firefox on a mac and currently don't have access to windows, but I am assuming it works on ie and other browsers this way as well - can anyone confirm this? Is there anything special about how this is done, or is it a simple link to a standard jpeg image file?
Can it be counted on to be standard behavior for most browsers?
Are there other common ways this is achieved?
The reason I am asking this is that I have a client that is requesting this behavior on a site I am making. One of their requests is that the "fill-window-sized" view of the image not be left aligned in the screen, but rather centered (safari and ff left align it if the window is of a shorter aspect ratio than the image). They may want other customization as well, such as a caption.
I don't think this behavior can be customized without some somewhat involved css/js work. Or are there any coding techniques that can can easily modify these behaviors - as opposed to coding a solution from scratch?
Or are there any libraries or solutions for customizing this (I am aware of various js overlay box solutions, but this is not what they want - they want the image to open in a new browser window, filling the window with the zoom cursor).
The "open in new window" thing is another issue I have questions about, but as it is a separate issue and this post is already way too long, I will start a new thread. Thanx.
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