window.onload = choosePic;

var myPix = new Array("../images/CalBanner.jpg", "../images/HomeBanner.jpg", "../images/HomeBanner2.jpg", "../images/NewsBAnner2.jpg");

function choosePic() {
	randomNum = Math.floor((Math.random() * myPix.length));
	
	document.getElementById("myPicture").src = myPix[randomNum];
	
}