rollover effect for hotspot

i have add hotspots on picture firework. hotspot are  text links in blue color. when hover on text links color of text change red. how implement behavior? need add css? hints? thank you

this not easy when small region want change color part of larger image.  in general, there 3 approaches can take:

 

1.  make n+1 separate images, n number of hotspots have on image.  first image none of 'links' in rollover color.  each additional image same base image each 1 of links given rollover color.  make each hotspot swap base image associated 1 hotspot onmouseover. if sounds tedious , awkward, that's because is.

 

2.  slice image pieces such each link contained in own piece.  make 2 images each link , use 1 rollover.  swap smaller images rollover on each link.

 

3.  links off of image altogether.  make link-less image background image larger container.  add links regular text in container, , use floats/margins nudge them position within container , on top of image.  apply links text, , use css rollovers.

 

in absence of more specific details image , size , location of hotspots, pick #3.  #3 anyhow....

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