diff --git a/wp-admin/includes/media.php b/wp-admin/includes/media.php
index af8bafc6b1..1c261e7026 100644
--- a/wp-admin/includes/media.php
+++ b/wp-admin/includes/media.php
@@ -1474,7 +1474,7 @@ SWFUpload.onload = function() {
 	<div>
 	<?php _e( 'Choose files to upload' ); ?>
 	<div id="flash-browse-button"></div>
-	<span><input id="cancel-upload" disabled="disabled" onClick="cancelUpload()" type="button" value="<?php esc_attr_e('Cancel Upload'); ?>" class="button" /></span>
+	<span><input id="cancel-upload" disabled="disabled" onclick="cancelUpload()" type="button" value="<?php esc_attr_e('Cancel Upload'); ?>" class="button" /></span>
 	</div>
 <?php do_action('post-flash-upload-ui'); ?>
 	<p class="howto"><?php _e('After a file has been uploaded, you can add titles and descriptions.'); ?></p>
@@ -1485,7 +1485,7 @@ SWFUpload.onload = function() {
 <?php do_action('pre-html-upload-ui'); ?>
 	<p id="async-upload-wrap">
 	<label class="screen-reader-text" for="async-upload"><?php _e('Upload'); ?></label>
-	<input type="file" name="async-upload" id="async-upload" /> <input type="submit" class="button" name="html-upload" value="<?php esc_attr_e('Upload'); ?>" /> <a href="#" onClick="try{top.tb_remove();}catch(e){}; return false;"><?php _e('Cancel'); ?></a>
+	<input type="file" name="async-upload" id="async-upload" /> <input type="submit" class="button" name="html-upload" value="<?php esc_attr_e('Upload'); ?>" /> <a href="#" onclick="try{top.tb_remove();}catch(e){}; return false;"><?php _e('Cancel'); ?></a>
 	</p>
 	<div class="clear"></div>
 	<?php if ( is_lighttpd_before_150() ): ?>
@@ -2034,11 +2034,11 @@ function type_url_form_image() {
 			<td class="field">
 				<input name="align" id="align-none" value="none" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'none' ? ' checked="checked"' : '').' />
 				<label for="align-none" class="align image-align-none-label">' . __('None') . '</label>
-				<input name="align" id="align-left" value="left" onClick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'left' ? ' checked="checked"' : '').' />
+				<input name="align" id="align-left" value="left" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'left' ? ' checked="checked"' : '').' />
 				<label for="align-left" class="align image-align-left-label">' . __('Left') . '</label>
-				<input name="align" id="align-center" value="center" onClick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'center' ? ' checked="checked"' : '').' />
+				<input name="align" id="align-center" value="center" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'center' ? ' checked="checked"' : '').' />
 				<label for="align-center" class="align image-align-center-label">' . __('Center') . '</label>
-				<input name="align" id="align-right" value="right" onClick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'right' ? ' checked="checked"' : '').' />
+				<input name="align" id="align-right" value="right" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'right' ? ' checked="checked"' : '').' />
 				<label for="align-right" class="align image-align-right-label">' . __('Right') . '</label>
 			</td>
 		</tr>
@@ -2049,15 +2049,15 @@ function type_url_form_image() {
 			</th>
 			<td class="field"><input id="url" name="url" value="" type="text" /><br />
 
-			<button type="button" class="button" value="" onClick="document.forms[0].url.value=null">' . __('None') . '</button>
-			<button type="button" class="button" value="" onClick="document.forms[0].url.value=document.forms[0].src.value">' . __('Link to image') . '</button>
+			<button type="button" class="button" value="" onclick="document.forms[0].url.value=null">' . __('None') . '</button>
+			<button type="button" class="button" value="" onclick="document.forms[0].url.value=document.forms[0].src.value">' . __('Link to image') . '</button>
 			<p class="help">' . __('Enter a link URL or click above for presets.') . '</p></td>
 		</tr>
 
 		<tr>
 			<td></td>
 			<td>
-				<input type="button" class="button" id="go_button" style="color:#bbb;" onClick="addExtImage.insert()" value="' . esc_attr__('Insert into Post') . '" />
+				<input type="button" class="button" id="go_button" style="color:#bbb;" onclick="addExtImage.insert()" value="' . esc_attr__('Insert into Post') . '" />
 			</td>
 		</tr>
 	</tbody></table>
diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index 2616907d12..6486996c3a 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -2455,7 +2455,7 @@ function meta_form() {
 ?>
 </select>
 <input class="hide-if-js" type="text" id="metakeyinput" name="metakeyinput" tabindex="7" value="" />
-<a href="#postcustomstuff" class="hide-if-no-js" onClick="jQuery('#metakeyinput, #metakeyselect, #enternew, #cancelnew').toggle();return false;">
+<a href="#postcustomstuff" class="hide-if-no-js" onclick="jQuery('#metakeyinput, #metakeyselect, #enternew, #cancelnew').toggle();return false;">
 <span id="enternew"><?php _e('Enter new'); ?></span>
 <span id="cancelnew" class="hidden"><?php _e('Cancel'); ?></span></a>
 <?php } else { ?>
@@ -3288,7 +3288,7 @@ function find_posts_div($found_action = '') {
 				<?php wp_nonce_field( 'find-posts', '_ajax_nonce', false ); ?>
 				<label class="screen-reader-text" for="find-posts-input"><?php _e( 'Search' ); ?></label>
 				<input type="text" id="find-posts-input" name="ps" value="" />
-				<input type="button" onClick="findPosts.send();" value="<?php esc_attr_e( 'Search' ); ?>" class="button" /><br />
+				<input type="button" onclick="findPosts.send();" value="<?php esc_attr_e( 'Search' ); ?>" class="button" /><br />
 
 				<input type="radio" name="find-posts-what" id="find-posts-posts" checked="checked" value="posts" />
 				<label for="find-posts-posts"><?php _e( 'Posts' ); ?></label>
@@ -3298,7 +3298,7 @@ function find_posts_div($found_action = '') {
 			<div id="find-posts-response"></div>
 		</div>
 		<div class="find-box-buttons">
-			<input type="button" class="button alignleft" onClick="findPosts.close();" value="<?php esc_attr_e('Close'); ?>" />
+			<input type="button" class="button alignleft" onclick="findPosts.close();" value="<?php esc_attr_e('Close'); ?>" />
 			<input id="find-posts-submit" type="submit" class="button-primary alignright" value="<?php esc_attr_e('Select'); ?>" />
 		</div>
 	</div>