highlight H3 tags on hover + remain highlighted on last selected H3 tag

http://test.production.esa.edu.au/ndlrn/ndlrncatalog/final.html

At the moment, when this page is loaded the first time, all the H3 elements are highlighted grey, when clicked on it becomes white. I would like this to be the other way around, but only highlight grey for the last selected H3 tag.

Also, it would be good if the H3 tags are highlighted on hover.

jeremyllAsked:
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GregArnottCommented:
It seems the highlighting process has been fixed using classes (ui-state-hover) etc.

As for "last selected" this can easily be addressed using jQuery's .toggleClass(), or addClass/removeClass.

Create a selected class with the colouring required, then either as part of the .click() event handler already in place for the H3 elements, else your own, use toggleClass or removeClass/addClass to remove current H3.selected, and apply it to the one clicked.
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