diff --git wp-admin/js/categories.js wp-admin/js/categories.js
index cc58eb4..9ee67db 100644
--- wp-admin/js/categories.js
+++ wp-admin/js/categories.js
@@ -30,5 +30,5 @@ jQuery(document).ready(function($) {
 	else
 		$('#the-list').wpList({ delBefore: delBefore });
 
-	$('.delete a[class^="delete"]').live('click', function(){return false;});
+	$('.delete a[class^="delete"]').live('click', function(e) { e.preventDefault(); });
 });
diff --git wp-admin/js/comment.js wp-admin/js/comment.js
index f9d93bf..e22ea89 100644
--- wp-admin/js/comment.js
+++ wp-admin/js/comment.js
@@ -3,15 +3,16 @@ jQuery(document).ready( function($) {
 	postboxes.add_postbox_toggles('comment');
 
 	var stamp = $('#timestamp').html();
-	$('.edit-timestamp').click(function () {
+	$('.edit-timestamp').click(function (e) {
+		e.preventDefault();
 		if ($('#timestampdiv').is(":hidden")) {
 			$('#timestampdiv').slideDown("normal");
 			$('.edit-timestamp').hide();
 		}
-		return false;
 	});
 
-	$('.cancel-timestamp').click(function() {
+	$('.cancel-timestamp').click(function(e) {
+		e.preventDefault();
 		$('#timestampdiv').slideUp("normal");
 		$('#mm').val($('#hidden_mm').val());
 		$('#jj').val($('#hidden_jj').val());
@@ -20,16 +21,16 @@ jQuery(document).ready( function($) {
 		$('#mn').val($('#hidden_mn').val());
 		$('#timestamp').html(stamp);
 		$('.edit-timestamp').show();
-		return false;
 	});
 
-	$('.save-timestamp').click(function () { // crazyhorse - multiple ok cancels
+	$('.save-timestamp').click(function (e) { // crazyhorse - multiple ok cancels
+		e.preventDefault();
 		var aa = $('#aa').val(), mm = $('#mm').val(), jj = $('#jj').val(), hh = $('#hh').val(), mn = $('#mn').val(),
 			newD = new Date( aa, mm - 1, jj, hh, mn );
 
 		if ( newD.getFullYear() != aa || (1 + newD.getMonth()) != mm || newD.getDate() != jj || newD.getMinutes() != mn ) {
 			$('.timestamp-wrap', '#timestampdiv').addClass('form-invalid');
-			return false;
+			return;
 		} else {
 			$('.timestamp-wrap', '#timestampdiv').removeClass('form-invalid');
 		}
@@ -44,6 +45,5 @@ jQuery(document).ready( function($) {
 			hh + ':' +
 			mn + '</b> '
 		);
-		return false;
 	});
 });
diff --git wp-admin/js/common.js wp-admin/js/common.js
index 0f6b84d..e6e09ac 100644
--- wp-admin/js/common.js
+++ wp-admin/js/common.js
@@ -327,10 +327,10 @@ $(document).ready( function() {
 		});
 	});
 
-	$('#default-password-nag-no').click( function() {
+	$('#default-password-nag-no').click( function(e) {
+		e.preventDefault();
 		setUserSetting('default_password_nag', 'hide');
 		$('div.default-password-nag').hide();
-		return false;
 	});
 
 	// tab in textareas
diff --git wp-admin/js/dashboard.js wp-admin/js/dashboard.js
index 50a17f8..6b8faf7 100644
--- wp-admin/js/dashboard.js
+++ wp-admin/js/dashboard.js
@@ -65,7 +65,8 @@ jQuery(document).ready( function($) {
 	/* QuickPress */
 	quickPressLoad = function() {
 		var act = $('#quickpost-action'), t;
-		t = $('#quick-press').submit( function() {
+		t = $('#quick-press').submit( function(e) {
+			e.preventDefault();
 			$('#dashboard_quick_press #publishing-action .spinner').show();
 			$('#quick-press .submit input[type="submit"], #quick-press .submit input[type="reset"]').prop('disabled', true);
 
@@ -82,7 +83,6 @@ jQuery(document).ready( function($) {
 				} ).end().remove();
 				quickPressLoad();
 			} );
-			return false;
 		} );
 
 		$('#publish').click( function() { act.val( 'post-quickpress-publish' ); } );
diff --git wp-admin/js/edit-comments.js wp-admin/js/edit-comments.js
index 038a1e5..8489a16 100644
--- wp-admin/js/edit-comments.js
+++ wp-admin/js/edit-comments.js
@@ -76,13 +76,13 @@ setCommentsList = function() {
 			a.attr('class', 'vim-z vim-destructive');
 			$('.avatar', el).clone().prependTo('#undo-' + id + ' .' + action + '-undo-inside');
 
-			a.click(function(){
+			a.click(function(e){
+				e.preventDefault();
 				list.wpList.del(this);
 				$('#undo-' + id).css( {backgroundColor:'#ceb'} ).fadeOut(350, function(){
 					$(this).remove();
 					$('#comment-' + id).css('backgroundColor', '').fadeIn(300, function(){ $(this).show() });
 				});
-				return false;
 			});
 		}
 
@@ -560,7 +560,7 @@ $(document).ready(function(){
 
 	setCommentsList();
 	commentReply.init();
-	$(document).delegate('span.delete a.delete', 'click', function(){return false;});
+	$(document).delegate('span.delete a.delete', 'click', function(e) { e.preventDefault(); });
 
 	if ( typeof $.table_hotkeys != 'undefined' ) {
 		make_hotkeys_redirect = function(which) {
diff --git wp-admin/js/gallery.js wp-admin/js/gallery.js
index d7b4bb1..658556a 100644
--- wp-admin/js/gallery.js
+++ wp-admin/js/gallery.js
@@ -34,22 +34,22 @@ jQuery(document).ready(function($) {
 		});
 	}
 
-	$('#asc').click(function(){desc = false; sortIt(); return false;});
-	$('#desc').click(function(){desc = true; sortIt(); return false;});
-	$('#clear').click(function(){clearAll(1); return false;});
-	$('#showall').click(function(){
+	$('#asc').click(function(e){desc = false; sortIt(); e.preventDefault();});
+	$('#desc').click(function(e){desc = true; sortIt(); e.preventDefault();});
+	$('#clear').click(function(e){clearAll(1); e.preventDefault();});
+	$('#showall').click(function(e){
+		e.preventDefault();
 		$('#sort-buttons span a').toggle();
 		$('a.describe-toggle-on').hide();
 		$('a.describe-toggle-off, table.slidetoggle').show();
 		$('img.pinkynail').toggle(false);
-		return false;
 	});
-	$('#hideall').click(function(){
+	$('#hideall').click(function(e){
+		e.preventDefault();
 		$('#sort-buttons span a').toggle();
 		$('a.describe-toggle-on').show();
 		$('a.describe-toggle-off, table.slidetoggle').hide();
 		$('img.pinkynail').toggle(true);
-		return false;
 	});
 
 	// initialize sortable
diff --git wp-admin/js/inline-edit-post.js wp-admin/js/inline-edit-post.js
index 9abf478..9883ad0 100644
--- wp-admin/js/inline-edit-post.js
+++ wp-admin/js/inline-edit-post.js
@@ -42,9 +42,9 @@ inlineEditPost = {
 		});
 
 		// add events
-		$('a.editinline').live('click', function(){
+		$('a.editinline').live('click', function(e){
+			e.preventDefault();
 			inlineEditPost.edit(this);
-			return false;
 		});
 
 		$('#bulk-title-div').parents('fieldset').after(
diff --git wp-admin/js/link.js wp-admin/js/link.js
index f8b4583..c38d9ae 100644
--- wp-admin/js/link.js
+++ wp-admin/js/link.js
@@ -7,7 +7,8 @@ jQuery(document).ready( function($) {
 	postboxes.add_postbox_toggles('link');
 
 	// category tabs
-	$('#category-tabs a').click(function(){
+	$('#category-tabs a').click(function(e){
+		e.preventDefault();
 		var t = $(this).attr('href');
 		$(this).parent().addClass('tabs').siblings('li').removeClass('tabs');
 		$('.tabs-panel').hide();
@@ -16,7 +17,6 @@ jQuery(document).ready( function($) {
 			deleteUserSetting('cats');
 		else
 			setUserSetting('cats','pop');
-		return false;
 	});
 	if ( getUserSetting('cats') )
 		$('#category-tabs a[href="#categories-pop"]').click();
@@ -56,11 +56,11 @@ jQuery(document).ready( function($) {
 	if ( 'pop' == getUserSetting('cats') )
 		$('a[href="#categories-pop"]').click();
 
-	$('#category-add-toggle').click( function() {
+	$('#category-add-toggle').click( function(e) {
+		e.preventDefault();
 		$(this).parents('div:first').toggleClass( 'wp-hidden-children' );
 		$('#category-tabs a[href="#categories-all"]').click();
 		$('#newcategory').focus();
-		return false;
 	} );
 
 	$('.categorychecklist :checkbox').change( syncChecks ).filter( ':checked' ).change();
diff --git wp-admin/js/plugin-install.js wp-admin/js/plugin-install.js
index f32574a..1901f8d 100644
--- wp-admin/js/plugin-install.js
+++ wp-admin/js/plugin-install.js
@@ -27,16 +27,17 @@ jQuery(document).ready(function($) {
 
 	$(window).resize(function(){ tb_position(); });
 
-	 $('#dashboard_plugins a.thickbox, .plugins a.thickbox').click( function() {
+	 $('#dashboard_plugins a.thickbox, .plugins a.thickbox').click( function(e) {
+		e.preventDefault();
 		tb_click.call(this);
 
 		$('#TB_title').css({'background-color':'#222','color':'#cfcfcf'});
 		$('#TB_ajaxWindowTitle').html('<strong>' + plugininstallL10n.plugin_information + '</strong>&nbsp;' + $(this).attr('title') );
-		return false;
 	});
 
 	/* Plugin install related JS*/
-	$('#plugin-information #sidemenu a').click( function() {
+	$('#plugin-information #sidemenu a').click( function(e) {
+		e.preventDefault();
 		var tab = $(this).attr('name');
 		//Flip the tab
 		$('#plugin-information-header a.current').removeClass('current');
@@ -44,7 +45,6 @@ jQuery(document).ready(function($) {
 		//Flip the content.
 		$('#section-holder div.section').hide(); //Hide 'em all
 		$('#section-' + tab).show();
-		return false;
 	});
 
 	$('a.install-now').click( function() {
diff --git wp-admin/js/post.js wp-admin/js/post.js
index d08dc4a..7ef4d92 100644
--- wp-admin/js/post.js
+++ wp-admin/js/post.js
@@ -164,11 +164,11 @@ tagBox = {
 		});
 
 		// tag cloud
-		$('a.tagcloud-link').click(function(){
+		$('a.tagcloud-link').click(function(e){
+			e.preventDefault();
 			if ( ! $('.the-tagcloud').length )
 				tagBox.get( $(this).attr('id') );
 			$(this).siblings('.the-tagcloud').toggle();
-			return false;
 		});
 	}
 };
@@ -280,7 +280,8 @@ jQuery(document).ready( function($) {
 			settingName = 'cats';
 
 		// TODO: move to jQuery 1.3+, support for multiple hierarchical taxonomies, see wp-lists.js
-		$('a', '#' + taxonomy + '-tabs').click( function(){
+		$('a', '#' + taxonomy + '-tabs').click( function(e){
+			e.preventDefault();
 			var t = $(this).attr('href');
 			$(this).parent().addClass('tabs').siblings('li').removeClass('tabs');
 			$('#' + taxonomy + '-tabs').siblings('.tabs-panel').hide();
@@ -289,7 +290,6 @@ jQuery(document).ready( function($) {
 				deleteUserSetting(settingName);
 			else
 				setUserSetting(settingName, 'pop');
-			return false;
 		});
 
 		if ( getUserSetting(settingName) )
@@ -340,11 +340,11 @@ jQuery(document).ready( function($) {
 			addAfter: catAddAfter
 		});
 
-		$('#' + taxonomy + '-add-toggle').click( function() {
+		$('#' + taxonomy + '-add-toggle').click( function(e) {
+			e.preventDefault();
 			$('#' + taxonomy + '-adder').toggleClass( 'wp-hidden-children' );
 			$('a[href="#' + taxonomy + '-all"]', '#' + taxonomy + '-tabs').click();
 			$('#new'+taxonomy).focus();
-			return false;
 		});
 
 		$('#' + taxonomy + 'checklist li.popular-category input[type="checkbox"], #' + taxonomy + 'checklist-pop input[type="checkbox"]').live( 'click', function(){
@@ -464,16 +464,17 @@ jQuery(document).ready( function($) {
 			return true;
 		}
 
-		$('.edit-visibility', '#visibility').click(function () {
+		$('.edit-visibility', '#visibility').click(function (e) {
+			e.preventDefault();
 			if ($('#post-visibility-select').is(":hidden")) {
 				updateVisibility();
 				$('#post-visibility-select').slideDown('fast');
 				$(this).hide();
 			}
-			return false;
 		});
 
-		$('.cancel-post-visibility', '#post-visibility-select').click(function () {
+		$('.cancel-post-visibility', '#post-visibility-select').click(function (e) {
+			e.preventDefault();
 			$('#post-visibility-select').slideUp('fast');
 			$('#visibility-radio-' + $('#hidden-post-visibility').val()).prop('checked', true);
 			$('#post_password').val($('#hidden_post_password').val());
@@ -481,10 +482,10 @@ jQuery(document).ready( function($) {
 			$('#post-visibility-display').html(visibility);
 			$('.edit-visibility', '#visibility').show();
 			updateText();
-			return false;
 		});
 
-		$('.save-post-visibility', '#post-visibility-select').click(function () { // crazyhorse - multiple ok cancels
+		$('.save-post-visibility', '#post-visibility-select').click(function (e) { // crazyhorse - multiple ok cancels
+			e.preventDefault();
 			var pvSelect = $('#post-visibility-select');
 
 			pvSelect.slideUp('fast');
@@ -502,23 +503,23 @@ jQuery(document).ready( function($) {
 			}
 
 			$('#post-visibility-display').html(	postL10n[$('input:radio:checked', pvSelect).val() + sticky]	);
-			return false;
 		});
 
 		$('input:radio', '#post-visibility-select').change(function() {
 			updateVisibility();
 		});
 
-		$('#timestampdiv').siblings('a.edit-timestamp').click(function() {
+		$('#timestampdiv').siblings('a.edit-timestamp').click(function(e) {
+			e.preventDefault();
 			if ($('#timestampdiv').is(":hidden")) {
 				$('#timestampdiv').slideDown('fast');
 				$('#mm').focus();
 				$(this).hide();
 			}
-			return false;
 		});
 
-		$('.cancel-timestamp', '#timestampdiv').click(function() {
+		$('.cancel-timestamp', '#timestampdiv').click(function(e) {
+			e.preventDefault();
 			$('#timestampdiv').slideUp('fast');
 			$('#mm').val($('#hidden_mm').val());
 			$('#jj').val($('#hidden_jj').val());
@@ -527,15 +528,14 @@ jQuery(document).ready( function($) {
 			$('#mn').val($('#hidden_mn').val());
 			$('#timestampdiv').siblings('a.edit-timestamp').show();
 			updateText();
-			return false;
 		});
 
-		$('.save-timestamp', '#timestampdiv').click(function () { // crazyhorse - multiple ok cancels
+		$('.save-timestamp', '#timestampdiv').click(function (e) { // crazyhorse - multiple ok cancels
+			e.preventDefault();
 			if ( updateText() ) {
 				$('#timestampdiv').slideUp('fast');
 				$('#timestampdiv').siblings('a.edit-timestamp').show();
 			}
-			return false;
 		});
 
 		$('#post').on( 'submit', function(e){
@@ -548,27 +548,27 @@ jQuery(document).ready( function($) {
 			}
 		});
 
-		$('#post-status-select').siblings('a.edit-post-status').click(function() {
+		$('#post-status-select').siblings('a.edit-post-status').click(function(e) {
+			e.preventDefault();
 			if ($('#post-status-select').is(":hidden")) {
 				$('#post-status-select').slideDown('fast');
 				$(this).hide();
 			}
-			return false;
 		});
 
-		$('.save-post-status', '#post-status-select').click(function() {
+		$('.save-post-status', '#post-status-select').click(function(e) {
+			e.preventDefault();
 			$('#post-status-select').slideUp('fast');
 			$('#post-status-select').siblings('a.edit-post-status').show();
 			updateText();
-			return false;
 		});
 
-		$('.cancel-post-status', '#post-status-select').click(function() {
+		$('.cancel-post-status', '#post-status-select').click(function(e) {
+			e.preventDefault();
 			$('#post-status-select').slideUp('fast');
 			$('#post_status').val($('#hidden_post_status').val());
 			$('#post-status-select').siblings('a.edit-post-status').show();
 			updateText();
-			return false;
 		});
 	} // end submitdiv
 
@@ -579,7 +579,8 @@ jQuery(document).ready( function($) {
 
 			$('#view-post-btn').hide();
 			b.html('<a href="#" class="save button button-small">'+postL10n.ok+'</a> <a class="cancel" href="#">'+postL10n.cancel+'</a>');
-			b.children('.save').click(function() {
+			b.children('.save').click(function(e) {
+				e.preventDefault();
 				var new_slug = e.children('input').val();
 				if ( new_slug == $('#editable-post-name-full').text() ) {
 					return $('.cancel', '#edit-slug-buttons').click();
@@ -597,15 +598,14 @@ jQuery(document).ready( function($) {
 					makeSlugeditClickable();
 					$('#view-post-btn').show();
 				});
-				return false;
 			});
 
-			$('.cancel', '#edit-slug-buttons').click(function() {
+			$('.cancel', '#edit-slug-buttons').click(function(e) {
+				e.preventDefault();
 				$('#view-post-btn').show();
 				e.html(revert_e);
 				b.html(revert_b);
 				real_slug.val(revert_slug);
-				return false;
 			});
 
 			for ( i = 0; i < full.length; ++i ) {
diff --git wp-admin/js/postbox.js wp-admin/js/postbox.js
index 838db5d..a9b4e89 100644
--- wp-admin/js/postbox.js
+++ wp-admin/js/postbox.js
@@ -31,9 +31,9 @@ var postboxes;
 			});
 
 			$('.postbox a.dismiss').bind('click.postboxes', function(e) {
+				e.preventDefault();
 				var hide_id = $(this).parents('.postbox').attr('id') + '-hide';
 				$( '#' + hide_id ).prop('checked', false).triggerHandler('click');
-				return false;
 			});
 
 			$('.hide-postbox-tog').bind('click.postboxes', function() {
diff --git wp-admin/js/theme-preview.js wp-admin/js/theme-preview.js
index b7959c5..5521476 100644
--- wp-admin/js/theme-preview.js
+++ wp-admin/js/theme-preview.js
@@ -20,7 +20,8 @@ jQuery(document).ready(function($) {
 	thickDims();
 	$(window).resize( function() { thickDims() } );
 
-	$('a.thickbox-preview').click( function() {
+	$('a.thickbox-preview').click( function(e) {
+		e.preventDefault();
 		tb_click.call(this);
 
 		var alink = $(this).parents('.available-theme').find('.activatelink'), link = '', href = $(this).attr('href'), url, text;
@@ -50,7 +51,5 @@ jQuery(document).ready(function($) {
 
 		$('#TB_iframeContent').width('100%');
 		thickDims();
-
-		return false;
 	} );
 });
diff --git wp-admin/js/theme.js wp-admin/js/theme.js
index 079c73b..7dda4df 100644
--- wp-admin/js/theme.js
+++ wp-admin/js/theme.js
@@ -64,11 +64,11 @@ var ThemeViewer;
 	ThemeViewer = function( args ) {
 
 		function init() {
-			$( '#filter-click, #mini-filter-click' ).unbind( 'click' ).click( function() {
+			$( '#filter-click, #mini-filter-click' ).unbind( 'click' ).click( function(e) {
+				e.preventDefault();
 				$( '#filter-click' ).toggleClass( 'current' );
 				$( '#filter-box' ).slideToggle();
 				$( '#current-theme' ).slideToggle( 300 );
-				return false;
 			});
 
 			$( '#filter-box :checkbox' ).unbind( 'click' ).click( function() {
diff --git wp-includes/js/comment-reply.js wp-includes/js/comment-reply.js
index 2015425..e9d8d52 100644
--- wp-includes/js/comment-reply.js
+++ wp-includes/js/comment-reply.js
@@ -22,7 +22,8 @@ addComment = {
 		parent.value = parentId;
 		cancel.style.display = '';
 
-		cancel.onclick = function() {
+		cancel.onclick = function(e) {
+			e.preventDefault();
 			var t = addComment, temp = t.I('wp-temp-form-div'), respond = t.I(t.respondId);
 
 			if ( ! temp || ! respond )
@@ -33,7 +34,6 @@ addComment = {
 			temp.parentNode.removeChild(temp);
 			this.style.display = 'none';
 			this.onclick = null;
-			return false;
 		}
 
 		try { t.I('comment').focus(); }
