quick fix: go back to display search results favicon via <img> tag and ViewImage,

! until better solution is found !.

Reason: in IE-Browser no individual favicon is displayed with <object> tag 
(always the default) and only few individual fav's with Firefox (randomly)

hint: to be able to use <img src=ViewImage/> return of default icon was
added back to it.

relates to http://mantis.tokeek.de/view.php?id=629

htroot/ViewImage.java

@@ -30,6 +30,7 @@ import java.awt.Rectangle;
 import java.awt.image.BufferedImage;
 import java.awt.image.Raster;
 import java.io.ByteArrayOutputStream;
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Iterator;
@@ -49,6 +50,7 @@ import net.yacy.cora.protocol.RequestHeader;
 import net.yacy.cora.storage.ConcurrentARC;
 import net.yacy.cora.util.ConcurrentLog;
 import net.yacy.data.URLLicense;
+import net.yacy.kelondro.util.FileUtils;
 import net.yacy.kelondro.util.MemoryControl;
 import net.yacy.kelondro.workflow.WorkflowProcessor;
 import net.yacy.peers.graphics.EncodedImage;
@@ -60,8 +62,11 @@ import net.yacy.server.serverSwitch;
 
 public class ViewImage {
 
-	private static Map<String, Image> iconcache = new ConcurrentARC<String, Image>(1000,
+    private static Map<String, Image> iconcache = new ConcurrentARC<String, Image>(1000,
-			Math.max(10, Math.min(32, WorkflowProcessor.availableCPU * 2)));
+            Math.max(10, Math.min(32, WorkflowProcessor.availableCPU * 2)));
+
+    private static String defaulticon = "htroot/env/grafics/dfltfvcn.ico";
+    private static byte[] defaulticonb = null;
 
 	/**
 	 * Try parsing image from post "url" parameter or from "code" parameter.
@@ -132,7 +137,7 @@ public class ViewImage {
 			ImageInputStream imageInStream = null;
 			InputStream inStream = null;
 			try {
-				String urlExt = MultiProtocolURL.getFileExtension(url.getFileName());
+                        String urlExt = MultiProtocolURL.getFileExtension(url.getFileName());
 				if (ext != null && ext.equalsIgnoreCase(urlExt) && isBrowserRendered(urlExt)) {
 					return openInputStream(post, sb.loader, auth, url);
 				}
@@ -149,10 +154,23 @@ public class ViewImage {
 				// read image
 				encodedImage = parseAndScale(post, auth, urlString, ext, imageInStream);
 			} catch(Exception e) {
-				/* Exceptions are not propagated here : many error causes are possible, network errors, 
+                            /* Exceptions are not propagated here : many error causes are possible, network errors,
-				 * incorrect or unsupported format, bad ImageIO plugin...
+                             * incorrect or unsupported format, bad ImageIO plugin...
-				 * Instead return an empty EncodedImage. Caller is responsible for handling this correctly (500 status code response) */
+                             * Instead return an empty EncodedImage. Caller is responsible for handling this correctly (500 status code response) */
-				encodedImage = new EncodedImage(new byte[0], ext, post.getBoolean("isStatic"));
+
+                            if ("favicon.ico".equalsIgnoreCase(url.getFileName())) { // but on missing favicon just present a default (occures frequently by call from searchitem.html)
+                                // currently yacysearchitem assigns "hosturl/favicon.ico" (to look for the filename should not much interfere with other situatios)
+                                if (defaulticonb == null) { // load the default icon once
+                                    try {
+                                        defaulticonb = FileUtils.read(new File(sb.getAppPath(), defaulticon));
+                                    } catch (final IOException initicon) {
+                                        defaulticonb = new byte[0];
+                                    }
+                                }
+                                encodedImage = new EncodedImage(defaulticonb, ext, post.getBoolean("isStatic"));
+                            } else {
+                                encodedImage = new EncodedImage(new byte[0], ext, post.getBoolean("isStatic"));
+                            }
 			} finally {
 				/*
 				 * imageInStream.close() method doesn't close source input

htroot/yacysearchitem.html

@@ -1,9 +1,7 @@
 #(content)#::
   <div class="searchresults">
   <h4 class="linktitle">
-  <object data="ViewImage.png?width=16&amp;height=16&amp;code=#[faviconCode]#&amp;isStatic=true" type="image/png" id="f#[urlhash]#" class="favicon" style="width:16px; height:16px;">
+  <img width="16" height="16" src="ViewImage.png?width=16&amp;height=16&amp;code=#[faviconCode]#&amp;isStatic=true" id="f#[urlhash]#" class="favicon" style="width:16px; height:16px;" alt="" />  
-  	<img width="16" height="16" src="env/grafics/dfltfvcn.ico" style="width:16px; height:16px;" alt="" />
-  </object>
   <a href="#[link]#" target="#[target]#">#[title]#</a></h4>
   <div class="urlactions">
     #(heuristic)#::
@@ -38,6 +36,7 @@
   #(showHostBrowser)#::&nbsp;|&nbsp;<a href="HostBrowser.html?path=#[link]#"><img src="env/grafics/minitree.png" width="15" height="8"/></a>#(/showHostBrowser)#
   #(showVocabulary)#::<br/>#{vocabulary}##[name]#:#[terms]# #{/vocabulary}##(/showVocabulary)#
   #(showSnapshots)#::<a href="#[link]#">Snapshots</a>#(/showSnapshots)#
+  #[ranking]#  
   </p>
   </div>
   ::