// Define pics for the homepage ad space in the following array.  It's set up for three pics now, but can be modified to include more or less.
var pics = ["placeholder. don't modify me. the zero item in the array is never called upon",
			"<img src=images/homepage/elitewoman.jpg height=238 width=700>",
			"<img src=images/homepage/startingline.jpg height=238 width=700>",
			"<img src=images/homepage/waterbottle.jpg height=238 width=700>",
			"<img src=images/homepage/wheeler.jpg height=238 width=700>"]

// This calculates the random number.
var randomNumber = Math.ceil(Math.random() * 4);