diff --git a/js/admin.js b/js/admin.js
index d80c2d145..785ce2a93 100644
--- a/js/admin.js
+++ b/js/admin.js
@@ -56,12 +56,14 @@ function str2url(str,encoding,ucfirst)
 	str = str.replace(/[^a-z0-9\s\'\:\/\[\]-]\\u00A1-\\uFFFF/g,'');
 	str = str.replace(/[\u0028\u0029\u0021\u003F\u002E\u0026\u005E\u007E\u002B\u002A\u002F\u003A\u003B\u003C\u003D\u003E]/g,'');
 	str = str.replace(/[\s\'\:\/\[\]-]+/g,' ');
-	str = str.replace(/[ ]/g,'-');
-	str = str.replace(/[\/]/g,'-');
+
+	// Add special char not used for url rewrite
+	str = str.replace(/[ ]/g, '-');
+	str = str.replace(/[\/\\"'|]*/g, '');
 
 	if (ucfirst == 1) {
-		c = str.charAt(0);
-		str = c.toUpperCase()+str.slice(1);
+		var first_char = str.charAt(0);
+		str = first_char.toUpperCase()+str.slice(1);
 	}
 
 	return str;
@@ -93,8 +95,8 @@ function strToAltImgAttr(str,encoding,ucfirst)
 	str = str.replace(/[\s\'\:\/\[\]-]+/g,' ');
 
 	if (ucfirst == 1) {
-		c = str.charAt(0);
-		str = c.toUpperCase()+str.slice(1);
+		var first_char = str.charAt(0);
+		str = first_char.toUpperCase()+str.slice(1);
 	}
 
 	return str;