--- trunk2/out/js/search.js	2004/09/24 18:04:48	469
+++ trunk2/out/js/search.js	2004/10/10 06:03:06	496
@@ -79,17 +79,26 @@
  From David Flanagan's, _Javascript:_The Definitive_Guide_, pg. 294-5,
   published by O'Reilly, 4th edition, 2002
 */
+
+var debug_div = null;
+
 function debug(msg)
 {
 //  return; // Disable debugging
 
-  var debug_div = element_id('debug');
+  if (! debug_div) debug_div = document.getElementById('debug');
 
-  if (debug_div) debug_div.innerHTML += msg+"<br/>\n";
+  // this will create debug div if it doesn't exist.
+  if (! debug_div) {
+  	debug_div = document.createElement('div');
+	document.body.appendChild(debug_div);
+  }
+  if (debug_div) {
+  	debug_div.appendChild(document.createTextNode(msg));
+	debug_div.appendChild(document.createElement("br"));
+  }
 }
 
-// 
-
 // Convert a number into a base 62 alphanumeric number string
 function convert(num)
 {
@@ -151,6 +160,7 @@
 
       // And tell it what URL to load
       xmldoc.load(url);
+      return true;
     }
     // Otherwise use Microsoft's proprietary API for Internet Explorer
     // Something about not following standards once again
@@ -164,7 +174,34 @@
         if (xmldoc.readyState == 4) handler(xmldoc, url, data, result_handler);
       }
       xmldoc.load(url);                                     // Start loading!
+      return true;
+    }
+    // else fallback on usage of iframes to load xml (Opera 7.53 without Java and maybe old Mac browsers)
+    else {
+      debug("using iframe xml loader - experimental and slow");
+      if (! window.xml_iframe) {
+        debug("creating iframe");
+        window.xml_iframe = document.createElement('div');
+        window.xml_iframe.innerHTML = '<iframe src="'+url+'" name="xml_iframe" height="0" width="0" style="display: none;"></iframe>';
+        document.body.appendChild(window.xml_iframe);
+      } else {
+        debug("loading xml in existing iframe");
+        window.frames.xml_iframe.window.document.location.href = url;
+      }
+
+      // set timeout to re-check if iframe is loaded
+      window.iframe_timeout = window.setInterval('iframe_xml_loaded();',100);
+
+      // save some data for iframe_xml_loaded()
+      window.xml_handler = handler;
+      window.xml_url = url;
+      window.xml_data = data;
+      window.xml_result_handler = result_handler;
+      return true;
     }
+    clearTimeout(watchdog_id);
+    debug("Browser incompatilibity: can't request XML document by one of supported methods");
+    return false;
   }
   catch(ex)
   {
@@ -178,6 +215,19 @@
   return true;
 }
 
+function iframe_xml_loaded() {
+  debug("iframe_xmldoc_loaded");
+  if (! window.frames['xml_iframe']) return;
+  var xml = eval('window.frames.xml_iframe.window.document');
+  if (xml) {
+	clearTimeout(window.iframe_timeout);
+  	debug("calling handler with ("+window.xml_url+","+window.xml_data+",...)");
+  	window.xml_handler(window.frames.xml_iframe.window.document, window.xml_url, window.xml_data, window.xml_result_handler);
+  } else {
+  	debug("can't eval iframe with xml");
+  }
+}
+
 function loadData(xmldoc, url, pos, result_handler)
 {
   clearTimeout(watchdog_id);