diff --git a/classes/pref/filters.php b/classes/pref/filters.php
index a371fcff49ecbff010d6115bf60d0edead940448..ec0c3862ab4e6e733a22dbb03574daba909a8cee 100644
--- a/classes/pref/filters.php
+++ b/classes/pref/filters.php
@@ -43,8 +43,11 @@ class Pref_Filters extends Handler_Protected {
 		return;
 	}
 
+	function testFilterDo() {
+		require_once "include/rssfuncs.php";
+
+		$offset = (int) db_escape_string($_REQUEST["offset"]);
 
-	function testFilter() {
 		$filter = array();
 
 		$filter["enabled"] = true;
@@ -94,24 +97,14 @@ class Pref_Filters extends Handler_Protected {
 			}
 		}
 
-		$found = 0;
-		$offset = 0;
-		$limit = 30;
-		$started = time();
-
-		print __("Articles matching this filter:");
-
-		require_once "include/rssfuncs.php";
-
-		print "<div class=\"filterTestHolder\">";
-		print "<table width=\"100%\" cellspacing=\"0\" id=\"prefErrorFeedList\">";
-
 		$glue = $filter['match_any_rule'] ? " OR " :  " AND ";
 		$scope_qpart = join($glue, $scope_qparts);
 
 		if (!$scope_qpart) $scope_qpart = "true";
 
-		while ($found < $limit && $offset < $limit * 10 && time() - $started < ini_get("max_execution_time") * 0.7) {
+		$rv = array();
+
+		//while ($found < $limit && $offset < $limit * 1000 && time() - $started < ini_get("max_execution_time") * 0.7) {
 
 			$result = db_query("SELECT ttrss_entries.id,
 					ttrss_entries.title,
@@ -130,7 +123,7 @@ class Pref_Filters extends Handler_Protected {
 					ref_id = ttrss_entries.id AND
 					($scope_qpart) AND
 					ttrss_user_entries.owner_uid = " . $_SESSION["uid"] . "
-				ORDER BY date_entered DESC LIMIT $limit OFFSET $offset");
+				ORDER BY date_entered DESC LIMIT 30 OFFSET $offset");
 
 			while ($line = db_fetch_assoc($result)) {
 
@@ -149,14 +142,10 @@ class Pref_Filters extends Handler_Protected {
 
 					if ($line["feed_title"]) $feed_title = "(" . $line["feed_title"] . ")";
 
-					print "<tr>";
-
-					print "<td width='5%' align='center'><input dojoType=\"dijit.form.CheckBox\"
-						checked=\"1\" disabled=\"1\" type=\"checkbox\"></td>";
-					print "<td>";
+					$line = "<td width='5%' align='center'><input dojoType=\"dijit.form.CheckBox\"
+						checked=\"1\" disabled=\"1\" type=\"checkbox\"></td><td>";
 
 					/*foreach ($filter['rules'] as $rule) {
-						$reg_exp = $rule['reg_exp'];
 						$reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
 
 						$line["title"] = preg_replace("/($reg_exp)/i",
@@ -166,25 +155,38 @@ class Pref_Filters extends Handler_Protected {
 							"<span class=\"highlight\">$1</span>", $content_preview);
 					}*/
 
-					print $line["title"];
-					print "<div class='small' style='float : right'>" . $feed_title . "</div>";
-					print "<div class=\"insensitive\">" . $content_preview . "</div>";
-					print " " . mb_substr($line["date_entered"], 0, 16);
+					$line .= $line["title"];
+					$line .= "<div class='small' style='float : right'>" . $feed_title . "</div>";
+					$line .= "<div class=\"insensitive\">" . $content_preview . "</div>";
+					$line .= " " . mb_substr($line["date_entered"], 0, 16);
 
-					print "</td></tr>";
+					$line .= "</td></tr>";
 
-					$found++;
+					array_push($rv, $line);
 				}
 			}
 
-			$offset += $limit;
-		}
+			//$offset += $limit;
+		//}
 
-		if ($found == 0) {
+		/*if ($found == 0) {
 			print "<tr><td align='center'>" .
 				__("No recent articles matching this filter have been found.");
-		}
+		}*/
+
+		print json_encode($rv);
+	}
+
+	function testFilter() {
+
+		if (isset($_REQUEST["offset"])) return $this->testFilterDo();
+
+		//print __("Articles matching this filter:");
+
+		print "<div><img src='images/indicator_tiny.gif'>&nbsp;<span id='prefFilterProgressMsg'>Looking for articles...</span></div>";
 
+		print "<br/><div class=\"filterTestHolder\">";
+		print "<table width=\"100%\" cellspacing=\"0\" id=\"prefFilterTestResultList\">";
 		print "</table></div>";
 
 		print "<div style='text-align : center'>";
diff --git a/js/prefs.js b/js/prefs.js
index 66288764a9e8cf6dbcfa01498a792180dd1af6b2..797e0e07146623f3b40c063fffb5d76f76c20c66 100644
--- a/js/prefs.js
+++ b/js/prefs.js
@@ -146,6 +146,7 @@ function editFilter(id) {
 			id: "filterEditDlg",
 			title: __("Edit Filter"),
 			style: "width: 600px",
+
 			test: function() {
 				var query = "backend.php?" + dojo.formToQuery("filter_edit_form") + "&savemode=test";
 
@@ -156,8 +157,61 @@ function editFilter(id) {
 					id: "filterTestDlg",
 					title: "Test Filter",
 					style: "width: 600px",
+					results: 0,
+					max_offset: 10000,
+					getTestResults: function(query, offset) {
+						var updquery = query + "&offset=" + offset;
+
+						console.log("getTestResults:" + offset);
+						//console.log(updquery);
+
+						new Ajax.Request("backend.php", {
+							parameters: updquery,
+							onComplete: function (transport) {
+
+								console.log(transport.responseText);
+
+								var result = JSON.parse(transport.responseText);
+
+								console.log("R:" + result);
+
+								//console.log("<<< " + transport.responseText);
+
+								if (result && dijit.byId("filterTestDlg") && dijit.byId("filterTestDlg").open) {
+									test_dlg.results += result.size();
+
+									$("prefFilterProgressMsg").innerHTML = __("Looking for articles (%d)...".replace("%d", offset));
+
+									console.log(offset + " " + test_dlg.max_offset);
+
+									for (var i = 0; i < result.size(); i++) {
+										$("prefFilterTestResultList").innerHTML += result[i];
+									}
+
+									if (test_dlg.results < 30 && offset < test_dlg.max_offset) {
+										window.setTimeout(function() {
+											//console.log("blaargh");
+
+											test_dlg.getTestResults(query, offset + 30);
+										}, 0);
+									} else {
+
+										// all done
+
+									}
+
+								} else {
+									console.log("can't parse results object / dialog closed");
+								}
+
+							} });
+					},
 					href: query});
 
+				dojo.connect(test_dlg, "onShow", null, function(e) {
+					test_dlg.getTestResults(query, 0);
+				});
+
 				test_dlg.show();
 			},
 			selectRules: function(select) {