if(document.images) {
	// preload
	image0 = new Image();
	image0.src = "/images/edge_r.gif";
	image1a = new Image();
	image1a.src = "/images/nav_links_on.gif";
	image1 = new Image();
	image1.src = "/images/nav_cats_on.gif";
	image2 = new Image();
	image2.src = "/images/nav_resources_on.gif";
	image3a = new Image();
	image3a.src = "/images/nav_newsletter_on.gif";
	image3 = new Image();
	image3.src = "/images/nav_aboutnat_on.gif";
	image4 = new Image();
	image4.src = "/images/nav_search_on.gif";
	image6 = new Image();
	image6.src = "/images/icon_comment.gif";
	image7 = new Image();
	image7.src = "/images/icon_email.gif";
	image8 = new Image();
	image8.src = "/images/icon_left.gif";
	image9 = new Image();
	image9.src = "/images/icon_right.gif";
	image10 = new Image();
	image10.src = "/images/bracket_edges.gif";
	image11 = new Image();
	image11.src = "/images/bracket_corners.gif";
	icon1 = new Image();
	icon1.src = "/images/icon_rss_on.gif";
	icon2 = new Image();
	icon2.src = "/images/icon_facebook_on.gif";
	icon3 = new Image();
	icon3.src = "/images/icon_twitter_on.gif";
	icon4 = new Image();
	icon4.src = "/images/icon_pinterest_on.gif";
}
function nav(imgName, state) {
	document.images[imgName].src = "/images/nav_" + imgName + "_" + state + ".gif";
}
function getWidth() {
	var n_win = window.innerWidth ? window.innerWidth : 0;
	var n_docel = document.documentElement ? document.documentElement.clientWidth : 0;
	var n_body = document.body ? document.body.clientWidth : 0;
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}
var old_index = 0;
var timeout_id;
function clear_timeouts() {
	if(document.getElementById) {
		if(timeout_id != null)
			self.clearTimeout(timeout_id);
	}
}
function popupon(index, leftPx) {
	if(document.getElementById) {
		clear_timeouts();
		if(old_index != 0) {
			if(document.getElementById(old_index + "Sub"))
				document.getElementById(old_index + "Sub").style.display = "none";
			nav(old_index, "off");
		}
		if(document.getElementById(index + "Sub")) {
			document.getElementById(index + "Sub").style.top = 343;
			document.getElementById(index + "Sub").style.left = ((getWidth() - 1008) / 2) + leftPx; 
			document.getElementById(index + "Sub").style.display = "inline";
		}
		nav(index, "on");
		old_index = index;
	}
}
function popupoff() {
	if(document.getElementById) {
		if(old_index != 0)
			timeout_id = setTimeout("if(document.getElementById(old_index + 'Sub'))document.getElementById(old_index + 'Sub').style.display = 'none';nav(old_index, 'off');", 100);
	}
}
function addComment(postID) {
	var commentWin = window.open("/comments_add.cfm?postID=" + postID, "commentWin", "width=600,height=400,scrollbars=yes,resizable=yes");
	commentWin.focus();
}
function postFacebook(u,t) {
	window.open('http://www.facebook.com/sharer.php?u='+u+'&t='+t,'sharer','toolbar=0,status=0,width=626,height=436');
	return false;
}