Closes #12, credits panel.

This custom credits panel gives us more flexibility. Also, there is an About link which is certainly easier to find than right-clicking on the extension in the Add-ons window.

chrome/chromeFiles/content/scholar/about.xul

@@ -0,0 +1,52 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://scholar/skin/scholar.css" type="text/css"?>
+<?xml-stylesheet href="chrome://scholar/skin/about.css" type="text/css"?>
+
+<dialog
+    id="scholar-about"
+    xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+    orient="vertical"
+	buttons="accept"
+	onload="onLoad();"
+	ondialogaccept="return true;">
+	
+	<script>
+		<![CDATA[
+			function onLoad()
+			{
+				var labels = document.getElementsByTagName('label');
+				
+				for(var i = 0; i<labels.length; i++)
+					labels[i].setAttribute('crop','end');
+			}
+		]]>
+	</script>
+	
+	<vbox id="aboutcontent">
+		<label id="name" value="Scholar for Firefox"/>
+		<label id="version" value="version 1.0a1"/>
+		
+		<label class="subhead" value="Created by:"/>
+		<vbox class="subcontent">
+			<label class="text-link" href="http://chnm.gmu.edu" value="Center for History and New Media"/>
+		</vbox>
+		<label class="subhead" value="Directors:"/>
+		<vbox class="subcontent">
+			<label value="Dan Cohen"/>
+			<label value="Josh Greenberg"/>
+		</vbox>
+		<label class="subhead" value="Developers:"/>
+		<vbox class="subcontent">
+			<label value="Dan Stillman"/>
+			<label value="David Norton"/>
+			<label value="Simon Kornblith"/>
+		</vbox>
+		<label class="subhead" value="Special Thanks:"/>
+		<vbox class="subcontent">
+			<label class="text-link" href="http://www.imls.gov/" value="Institute of Museum and Library Services"/>
+			<label class="text-link" href="http://www.mozilla.org/" value="Mozilla Foundation"/>
+			<label class="text-link" href="http://www.famfamfam.com/lab/icons/silk/" value="famfamfam (icons)"/>
+		</vbox>
+	</vbox>
+</dialog>

chrome/chromeFiles/content/scholar/overlay.xul

@@ -39,6 +39,7 @@
 			<toolbar align="end">
 				<label value="Scholar" id="scholar-toolbar-name"/>
 				<label value="1.0 Alpha"/>
+				<label class="text-link" value="About..." onclick="window.openDialog('chrome://scholar/content/about.xul','about','chrome,modal');"/>
 				<spacer flex="1"/>
 				<toolbarbutton id="tb-fullscreen" tooltiptext="Toggle Fullscreen" oncommand="ScholarPane.fullScreen();"/>
 				<toolbarbutton class="tabs-closebutton" oncommand="ScholarPane.toggleDisplay()"/>

chrome/chromeFiles/skin/default/scholar/about.css

@@ -0,0 +1,35 @@
+dialog
+{
+	padding-top: 0px;
+	padding-left: 0px;
+	padding-right: 0px;
+}
+
+#aboutcontent
+{
+	background: white;
+	padding: 10px;
+}
+
+#name
+{
+	font-size: large;
+	font-weight: bold;
+}
+
+#version
+{
+	color: gray;
+	margin-bottom: 5px;
+}
+
+.subhead
+{
+	margin-top: 5px;
+	font-weight: bold;
+}
+
+.subcontent
+{
+	margin-left: 10px;
+}

install.rdf

@@ -16,7 +16,7 @@
     <em:developer>Dan Stillman</em:developer>
     <em:homepageURL>http://chnm.gmu.edu/tools/firefoxscholar/</em:homepageURL>
     <em:optionsURL>chrome://scholar/content/preferences.xul</em:optionsURL>
-    <!--<em:aboutURL>chrome://scholar/content/about.xul</em:aboutURL>-->
+    <em:aboutURL>chrome://scholar/content/about.xul</em:aboutURL>
     <!--<em:iconURL>chrome://scholar/skin/mainicon.png</em:iconURL>-->
     <em:updateURL>http://chnm.gmu.edu/firefoxscholar/download/update-svn.rdf</em:updateURL>
     <em:type>2</em:type> <!-- type=extension -->