var mastheads = new Array(4);
	mastheads[0] = "masthead_chem.png";
	mastheads[1] = "masthead_clean.png";
	mastheads[2] = "masthead_construction.png";
	mastheads[3] = "masthead_worn.png";

	function getMastheadImgTag(
		pathToRoot) {

		var now = new Date()
		var mastheadIndex = (now.getHours() % mastheads.length)

		var masthead = mastheads[mastheadIndex];
		//var masthead = mastheads[0];
		var mastheadUrl = pathToRoot + "img/com/x1seven/krypton/website/" + masthead;

		var mastheadImgTag = "";
		mastheadImgTag += "<img src=\"" + mastheadUrl + "\" />";

		return mastheadImgTag;

	}