popup window dispaly on mouseover and mouseout event using javascript

You have hardly put an effort in posting what you are trying to do! :doh:

Please be specific and formulate your question properly from next time.
For now, here is a sample that would give you an idea of how to implement it, use the same logic where ever you want to:
1. Inject Javascript function on mousehover & mouseout of the link in a grid row.
2. Using JavaScript, show a div that contains the needed details(image here) when you hover your mouseover that row
3. Using JavaScript, hide the div onmouseout.

For injecting JS to a control from server side, do something like:

// Show div
myTextbox.Style.Attributes.Add("onmouseover", "ShowDiv(this);");

//Hide div
myTextbox.Style..Attributes.Add("onmouseover", "HideDiv(this);");

Try!