Index: typo3/sysext/cms/tslib/class.tslib_fe.php
===================================================================
--- typo3/sysext/cms/tslib/class.tslib_fe.php	(revision 6361)
+++ typo3/sysext/cms/tslib/class.tslib_fe.php	(working copy)
@@ -3822,8 +3822,8 @@
 	 * @return	void
 	 */
 	function previewInfo()	{
-		if ($this->fePreview)	{
-				if ($this->fePreview==2)	{
+		if ($this->fePreview) {
+				if ($this->fePreview === 2) {
 					$onclickForStoppingPreview = 'document.location="'.t3lib_div::getIndpEnv('TYPO3_SITE_URL').'index.php?ADMCMD_prev=LOGOUT&returnUrl='.rawurlencode(t3lib_div::getIndpEnv('REQUEST_URI')).'";return false;';
 					$text = 'Preview of workspace "'.$this->whichWorkspace(TRUE).'" ('.$this->whichWorkspace().')';
 					$html = $this->doWorkspacePreview() ? '<br/><input name="_" type="submit" value="Stop preview" onclick="'.htmlspecialchars($onclickForStoppingPreview).'" />' : '';
@@ -3834,7 +3834,7 @@
 
 				$stdMsg = '<div id="typo3-previewInfo" style="position: absolute; top: 20px; right: 20px; border: 2px solid #000; padding: 5px 5px; background: #f00; font: 1em Verdana; color: #000; font-weight: bold; z-index: 10001">'.htmlspecialchars($text).$html.'</div>';
 
-				if ($this->fePreview==2)	{
+				if ($this->fePreview === 2) {
 					$temp_content = $this->config['config']['message_preview_workspace'] ?
 						@sprintf($this->config['config']['message_preview_workspace'], $this->whichWorkspace(TRUE),$this->whichWorkspace()) :
 						$stdMsg;