var nav_image_roots = new Array("nav_home", "nav_about", "nav_expert", "nav_div", "nav_news", "nav_careers");
var len = nav_image_roots.length;

for (var i=0; i<len; i++) {
	eval("var " + nav_image_roots[i] + "_on = new  Image();");
	eval(nav_image_roots[i] + "_on.src = 'images/masthead/nav/interior/" + nav_image_roots[i] + "_on.gif';");
	eval("var " + nav_image_roots[i] + "_off = new  Image();");
	eval(nav_image_roots[i] + "_off.src = 'images/masthead/nav/interior/" + nav_image_roots[i] + "_off.gif'");
}

var subnav_image_roots = new Array("subnav_sitemap", "subnav_contact");	
len = subnav_image_roots.length;

for (var i=0; i<len; i++) {
	eval("var " + subnav_image_roots[i] + "_on = new  Image();");
	eval(subnav_image_roots[i] + "_on.src = 'images/masthead/subnav/" + subnav_image_roots[i] + "_hilite.gif';");
	eval("var " + subnav_image_roots[i] + "_off = new  Image();");
	eval(subnav_image_roots[i] + "_off.src = 'images/masthead/subnav/" + subnav_image_roots[i] + "_off.gif'");
}

function highlite(el, new_state) {
	eval("document.images['" + el + "'].src = " + el + "_" + new_state + ".src;");
}

function openNewsPopup(this_url) {
	var new_win = window.open(this_url, 'news_window', 'scrollbars=yes,width=480,height=500');
}