Reducing InnerHTML > Function Set

In my current folio site I have used IDed spans with the innerHTML command to alter descriptions of folio items.

I have 3 text strings that are all changed: Title, Dimensions and Description.
The spans are called worktitle, dimensions and about, respectively.

Each button in the section sub-menu has the following set of commands (with varying texts):

onclick="worktitle.innerHTML='title blah blah' dimensions.innerHTML='dimensions blah blah' about.innerHTML='description blah blah'"

I would like to be able to use functions instead and turn the set into something like:

onclick="textOne('title blah blah'); textTwo('dimensions blah blah'); textThree('new description blah blah.');"

...or ideally, turn the set into one function that can refer to and change all three texts. Something like:

onclick="textWrite('title blah blah', 'dimensions blah blah', 'description blah blah')"

My absolute beginner's knowledge of javascript is still insufficient to do this without help.