Query return highlight

[Carl Burn]

Hello all,

I have a map with a raster layer (street maps) and a polygon layer (a 
shape file of postcode sectors), when I perform a query (using cgi and a 
mode of itemquerymap) on the data in one of the vector layers I can 
happily display a map centred on the polygon with the raster layer in 
the background but what I need to do is to show the polygon located by 
my search as a highlighted area over the raster data.
Can anyone suggest how I can do this please?

Cheers

Burnsy