misc code cleanup

functions.js

@@ -1159,12 +1159,7 @@ function leading_zero(p) {
 
 function closeInfoBox(cleanup) {
 
-	if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
-		var overlay = document.getElementById("dialog_overlay");
-		if (overlay) {
-			overlay.style.display = "none";
-		}
-	}
+	Element.hide("dialog_overlay");
 
 	var box = document.getElementById('infoBox');
 	var shadow = document.getElementById('infoBoxShadow');
@@ -1220,11 +1215,8 @@ function infobox_callback2(transport) {
 
 		debug("infobox_callback2");
 
-		if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
-			var overlay = document.getElementById("dialog_overlay");
-			if (overlay) {
-				overlay.style.display = "block";
-			}
+		if (!getInitParam("infobox_disable_overlay")) {
+			Element.show("dialog_overlay");
 		}
 
 		var box = document.getElementById('infoBox');

prefs.php

@@ -168,7 +168,7 @@ window.onload = init;
 <div id="notify" class="notify"><span id="notify_body">&nbsp;</span></div>
 <div id="infoBoxShadow"><div id="infoBox">BAH</div></div>
 
-<div id="dialog_overlay"> </div>
+<div id="dialog_overlay" style="display : none"> </div>
 
 <div id="prefFooter">
 	<?php if (defined('_DEBUG_USER_SWITCH')) { ?>

tt-rss.css

@@ -1229,7 +1229,6 @@ a.cdmToggleLink:hover {
 	width : 100%;
 	z-index : 2;
 	position : absolute;
-	display : none;
 	background-image : url("images/shadow_white.png");
 }
 

tt-rss.php

@@ -100,7 +100,7 @@
 	<div id="fatal_error_msg">Unknown Error</div>
 </div></div>
 
-<div id="dialog_overlay"> </div>
+<div id="dialog_overlay" style="display : none"> </div>
 
 <script type="text/javascript">
 if (document.addEventListener) {