Hello again

In the Lifestyle template at http://ecchoir.co.uk/index.php/members-own-stories I am sharing the stories and experiences of some of the members of a choir. Some have disabilities or impairments that they describe. I would like the name of the disability or syndrome to point to a text box which would give a simple explanation of the condition. However the present link to Asperger's Syndrome then takes the reader away from a choir in Cumbria and off to the site which deals with autism. What I want is a small text box that I can link to to simply describe, say Asperger's Syndrome as being, say, "a mild form of autism which can affect understanding and social interaction rather than the life and times of Asperger himself and what his Mammy said about him and so on. I don't want the site visitor to vanish.
I am sure there is a way of doing this already and apologise for not being able to find it. Please point me in the right direction.

Cheers
Ian