sampleTime=(new Date()).getHours();

var imglist = new Array(
		"img/top_image.jpg"
	,	"img/top_image2.jpg"
);
var linklist = new Array(
		""
	,	""
);

var selectnum = Math.floor((Math.random() * 100)) % imglist.length;
var link;
if (linklist[selectnum] != "") {
	link = "<a href=" + linklist[selectnum] + ">";
} else {
	link = "";
}

var output = link + "<img src=" + imglist[selectnum] + " border=0></a>";
document.write(output);