diff --git a/application/displayblock.class.inc.php b/application/displayblock.class.inc.php
index 2a2dcb3a8..fa707816a 100644
--- a/application/displayblock.class.inc.php
+++ b/application/displayblock.class.inc.php
@@ -1173,8 +1173,10 @@ EOF
 		if (($bAutoReload) && ($this->m_sStyle != 'search')) // Search form do NOT auto-reload
 		{
 			// Used either for asynchronous or auto_reload
-			$sFilter = addslashes(str_replace("'", "\'", $this->m_oFilter->serialize()));
-			$sExtraParams = addslashes(str_replace("'", "\'", json_encode($aExtraParams)));
+			// does a json_encode twice to get a string usable as function parameter
+			$sFilterBefore = $this->m_oFilter->serialize();
+			$sFilter = json_encode($sFilterBefore);
+			$sExtraParams = json_encode(json_encode($aExtraParams));
 
 			$oPage->add_script(
 				<<<JS
@@ -1184,7 +1186,10 @@ if (typeof window.oAutoReloadBlock == "undefined") {
 if (typeof window.oAutoReloadBlock['$sId'] != "undefined") {
     clearInterval(window.oAutoReloadBlock['$sId']);
 }
-window.oAutoReloadBlock['$sId'] = setInterval("ReloadBlock('$sId', '{$this->m_sStyle}', '$sFilter', '$sExtraParams')", '$iReloadInterval');
+
+window.oAutoReloadBlock['$sId'] = setInterval(function() {
+	ReloadBlock('$sId', '{$this->m_sStyle}', $sFilter, $sExtraParams);
+}, '$iReloadInterval');
 JS
 			);
 		}