I have to take the phrase
"It’s that time of year when you clean out your closets, dust off shelves, and spruce up your floors. Once you’ve taken care of the dust and dirt, what about some digital cleaning? Going through all your files and computers may seem like a daunting task, but we found ways to make the process fairly painless."
and
Divide the text into an array of words.
Iterate over that array, at each step:
Build SPAN elements as you go, along with the attributes as shown in the example
Add the SPAN elements to the original DIV
Add a click handler to the SPAN elements, or to the DIV, which causes the style on the SPAN to change on mouseover.
Im not necessarily asking someone to do it for me, I just need a point in the right direction as to where I should start