Make BLB content use full viewport width

- MainHeader.js: render the main layout table at width=100% and let the
  mainRightTD content cell auto-fill remaining space (left nav stays 121px).
  Previously the content cell was fixed to docWidth (~480px), wasting most of
  a modern wide monitor.
- standard.css: neutralize html{zoom:130%} (force 100%) and add an
  #mainRightTD{width:auto!important} guard.

css/standard.css

@@ -1,6 +1,6 @@
 
 html {
-    zoom: 130%
+    zoom: 100% !important;
     }
 
 
@@ -598,3 +598,6 @@ div.floatyMover {
   height:18px;
 }
 
+
+/* === Full-viewport override (added for modern monitors) === */
+#mainRightTD { width:auto !important; }

js/MainHeader.js

@@ -152,7 +152,7 @@ if(noLeftNav[window.name]) {
 } else {
 	document.write(
 		'<div align="left">' +
-		'<table border="0" cellpadding="0" cellspacing="0">' +
+		'<table border="0" cellpadding="0" cellspacing="0" width="100%">' +
 		'<tr>' +
 		'<td valign="top" align="left">' +
 		'<div style="width:121px;" class="menu_tablecell">'
@@ -179,7 +179,7 @@ if(noLeftNav[window.name]) {
 }
 
 document.write(
-	'<td valign="TOP" ID="mainRightTD" align="LEFT" width='+docWidth+'">'+
+	'<td valign="TOP" ID="mainRightTD" align="LEFT">'+
   '<div class="notice" style="color:#ff0000">' +
   '  <a href="https://www.blb.org"></a>' +
   '</div>'