Highlight point on image map

I am working on imagemap, there are points on my image, I want to mark one of point upon clicking of a button,开发者_如何学JAVA also please give me idea how can I can control the coordinates because my image is resizeable/dynamic, every time image size will be changed.

http://img191.imageshack.us/img191/1330/imgmaps.png http://img191.imageshack.us/img191/1330/imgmaps.png

Many Thanks for any kind of help.

This seems interesting, but easily possible, Take and imagebutton control and load your image into it, in the server side click event of it, you will get co-ordintates of the clicked point, you can simply use GDI+ library of .net framework to draw a point on your image.

I hope this helps