diff --git a/backend.php b/backend.php
index b4b1c6f58..ff19595f5 100644
--- a/backend.php
+++ b/backend.php
@@ -1882,17 +1882,17 @@
 				if ($subop == "editCat") {
 					print "Edit category: 
 						<input type=\"submit\" class=\"button\"
-							onclick=\"javascript:feedCatEditSave()\" value=\"Save\">
+							onclick=\"return feedCatEditSave()\" value=\"Save\">
 						<input type=\"submit\" class=\"button\"
-							onclick=\"javascript:feedCatEditCancel()\" value=\"Cancel\">";
+							onclick=\"return feedCatEditCancel()\" value=\"Cancel\">";
 					} else {
 		
 					print "
 						Selection:&nbsp;
 					<input type=\"submit\" class=\"button\" disabled=\"true\"
-						onclick=\"javascript:editSelectedFeedCat()\" value=\"Edit\">
+						onclick=\"return editSelectedFeedCat()\" value=\"Edit\">
 					<input type=\"submit\" class=\"button\" disabled=\"true\"
-						onclick=\"javascript:removeSelectedFeedCats()\" value=\"Remove\">";
+						onclick=\"return removeSelectedFeedCats()\" value=\"Remove\">";
 	
 				}
 	
@@ -1988,11 +1988,11 @@
 
 			print "<input type=\"submit\" 
 				id=\"infobox_submit\"
-				class=\"button\" onclick=\"filterEditSave()\" 
+				class=\"button\" onclick=\"return filterEditSave()\" 
 				value=\"Save\"> ";
 
 			print "<input class=\"button\"
-				type=\"submit\" onclick=\"filterEditCancel()\" 
+				type=\"submit\" onclick=\"return filterEditCancel()\" 
 				value=\"Cancel\">";
 
 			print "</div>";
@@ -2076,7 +2076,7 @@
 
 		print "<input type=\"submit\" 
 			class=\"button\" 
-			onclick=\"javascript:displayDlg('quickAddFilter', false)\" 
+			onclick=\"return displayDlg('quickAddFilter', false)\" 
 			id=\"create_filter_btn\"
 			value=\"Create filter\">"; 
 
@@ -2173,9 +2173,9 @@
 			print "
 					Selection:
 				<input type=\"submit\" class=\"button\" disabled=\"true\"
-					onclick=\"javascript:editSelectedFilter()\" value=\"Edit\">
+					onclick=\"return editSelectedFilter()\" value=\"Edit\">
 				<input type=\"submit\" class=\"button\" disabled=\"true\"
-					onclick=\"javascript:removeSelectedFilters()\" value=\"Remove\">";
+					onclick=\"return removeSelectedFilters()\" value=\"Remove\">";
 
 			print "</p>";
 
@@ -2644,11 +2644,11 @@
 
 			print "<input type=\"submit\" 
 				id=\"infobox_submit\"
-				class=\"button\" onclick=\"qaddFilter()\" 
+				class=\"button\" onclick=\"return qaddFilter()\" 
 				disabled=\"true\" value=\"Create\"> ";
 
 			print "<input class=\"button\"
-				type=\"submit\" onclick=\"closeInfoBox()\" 
+				type=\"submit\" onclick=\"return closeInfoBox()\" 
 				value=\"Cancel\">";
 
 			print "</div>";
@@ -3112,9 +3112,10 @@
 			
 			print "<div align='right'>
 				<input class=\"button\"
-					type=\"submit\" onclick=\"javascript:userEditSave()\" value=\"Save\">
+					type=\"submit\" onclick=\"return userEditSave()\" 
+					value=\"Save\">
 				<input class=\"button\"
-					type=\"submit\" onclick=\"javascript:userEditCancel()\" 
+					type=\"submit\" onclick=\"return userEditCancel()\" 
 					value=\"Cancel\"></div>";
 
 			print "</div>";
diff --git a/functions.js b/functions.js
index 6473e8698..853f36e19 100644
--- a/functions.js
+++ b/functions.js
@@ -1134,6 +1134,7 @@ function closeInfoBox(cleanup) {
 
 	enableHotkeys();
 
+	return false;
 }
 
 
@@ -1153,6 +1154,7 @@ function displayDlg(id, param) {
 
 	disableHotkeys();
 
+	return false;
 }
 
 function infobox_submit_callback() {
diff --git a/prefs.js b/prefs.js
index d73967313..0b15d8a10 100644
--- a/prefs.js
+++ b/prefs.js
@@ -454,6 +454,8 @@ function removeSelectedLabels() {
 	} else {
 		alert("No labels are selected.");
 	}
+
+	return false;
 }
 
 function removeSelectedUsers() {
@@ -481,6 +483,8 @@ function removeSelectedUsers() {
 	} else {
 		alert("No users are selected.");
 	}
+
+	return false;
 }
 
 function removeSelectedFilters() {
@@ -507,6 +511,8 @@ function removeSelectedFilters() {
 	} else {
 		alert("No filters are selected.");
 	}
+
+	return false;
 }
 
 
@@ -538,7 +544,8 @@ function removeSelectedFeeds() {
 		alert("No feeds are selected.");
 
 	}
-
+	
+	return false;
 }
 
 function removeSelectedFeedCats() {
@@ -569,6 +576,7 @@ function removeSelectedFeedCats() {
 
 	}
 
+	return false;
 }
 
 function feedEditCancel() {
@@ -582,6 +590,7 @@ function feedEditCancel() {
 
 	selectPrefRows('feed', false); // cleanup feed selection
 
+	return false;
 }
 
 function feedCatEditCancel() {
@@ -599,6 +608,7 @@ function feedCatEditCancel() {
 	xmlhttp.onreadystatechange=feedlist_callback;
 	xmlhttp.send(null);
 
+	return false;
 }
 
 function feedEditSave() {
@@ -647,6 +657,7 @@ function feedCatEditSave() {
 
 	active_feed_cat = false;
 
+	return false;
 }
 
 
@@ -663,6 +674,7 @@ function labelTest() {
 	xmlhttp.onreadystatechange=infobox_callback;
 	xmlhttp.send(null);
 
+	return false;
 }
 
 function displayHelpInfobox(topic_id) {
@@ -692,6 +704,7 @@ function labelEditCancel() {
 	xmlhttp.onreadystatechange=labellist_callback;
 	xmlhttp.send(null);
 
+	return false;
 }
 
 function userEditCancel() {
@@ -703,6 +716,8 @@ function userEditCancel() {
 
 	selectPrefRows('user', false); // cleanup feed selection
 	closeInfoBox();
+
+	return false;
 }
 
 function filterEditCancel() {
@@ -716,6 +731,8 @@ function filterEditCancel() {
 	
 	selectPrefRows('filter', false); // cleanup feed selection
 	closeInfoBox();
+
+	return false;
 }
 
 function labelEditSave() {
@@ -752,6 +769,7 @@ function labelEditSave() {
 	xmlhttp.onreadystatechange=labellist_callback;
 	xmlhttp.send(null);
 
+	return false;
 }
 
 function userEditSave() {
@@ -777,6 +795,8 @@ function userEditSave() {
 	xmlhttp.open("GET", "backend.php?" + query, true);			
 	xmlhttp.onreadystatechange=userlist_callback;
 	xmlhttp.send(null);
+
+	return false;
 }
 
 
@@ -806,6 +826,7 @@ function filterEditSave() {
 	xmlhttp.onreadystatechange=filterlist_callback;
 	xmlhttp.send(null);
 
+	return false;
 }
 
 function editSelectedLabel() {