adjusting class in any tag

using simple events, you can add/remove/set/unset a tag's class.
Click on one of the following (even though they don't look like links or buttons):

click to set class = hide (removes current class)
click to set class = show (removes current class)
click to add class += red
click to add class += blue
click to remove "hide"
click to remove "show"
click to remove "red"
click to remove "blue"


Test tag (remember to reload/refresh page often!!)