How do you make a small window overlay and grey out the main window?

Here's a screen shot of what I'm looking to do:

Would like some guidance on how this is done? I know PHP but only a little Javascript. I suspect this is probably done with Javascript. If so, need some details.

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I would suggest using jQuery...

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it is easy with greybox, just include scripts and css of this library.

And then for example add attribute rel="gb_page[440, 500]" to link where you want show overlay window like:

<a href="<some URL>" title="title of this link" rel="gb_page[440, 500]">Some link</a>

Open in new window

for more info about greybox (in my above comment) go here:

greybox is the best in its field
alicia1234Author Commented:
Two very good resources. Thanks.
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