diff --git a/Classes/FrontendEditPanel.php b/Classes/FrontendEditPanel.php
index 9ded0ff..b271509 100644
--- a/Classes/FrontendEditPanel.php
+++ b/Classes/FrontendEditPanel.php
@@ -253,7 +253,7 @@ class FrontendEditPanel {
 	 * @see    editPanelLinkWrap()
 	 */
 	protected function editPanelLinkWrap_doWrap($string, $url) {
-		$onclick = 'vHWin=window.open(\'' . $url . '&returnUrl=close.html\',\'FEquickEditWindow\',\'' . ($GLOBALS['BE_USER']->uc['edit_wideDocument'] ? 'width=690,height=500' : 'width=540,height=400') . ',status=0,menubar=0,scrollbars=1,resizable=1\');vHWin.focus();return false;';
+		$onclick = 'vHWin=window.open(' . GeneralUtility::quoteJSvalue($url . '&returnUrl=close.html') . ',\'FEquickEditWindow\',\'width=690,height=500,status=0,menubar=0,scrollbars=1,resizable=1\');vHWin.focus();return false;';
 		return '<a href="#" onclick="' . htmlspecialchars($onclick) . '" class="frontEndEditIconLinks">' . $string . '</a>';
 	}