function setupMainNav() {
	    var loc = window.location.href;
	    if (loc.indexOf("about-us.aspx") > -1) {
		document.getElementById("navAbout").className = "selected";
	    } else if (loc.indexOf("services.aspx") > -1) {
		document.getElementById("navServices").className = "selected";

	    } else if (loc.indexOf("products.aspx") > -1) {
		document.getElementById("navProducts").className = "selected";

	    } else if (loc.indexOf("systems-research-analytics.aspx") > -1) {
		document.getElementById("navSystems").className = "selected";

	    } else if (loc.indexOf("news-and-links.aspx") > -1) {
		document.getElementById("navNews").className = "selected";
	    }
	}