asp.net - how do they get this to popup when they hover over red box?

Please see attached...I'm curious how they got this box to hover over..with all the bells and whistles...charts...when they hover over the DJIA -1.10% red box...
SubForm-popup.doc
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GlobaLevelProgrammerAsked:
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rajesh_chdCommented:
There are two methods for doing this

1. they use a hidden div and prestore the contents, and show it on mouseover, as leakim971 has said.

2. Second scenrio is when you have to show dynamic information, you use ajax calls to server to get the data and show it.
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