Fix: Add an unsecape function to decode javascript escape

encoding. This also fix ecm for cyrillic chars.

htdocs/core/lib/functions2.lib.php

@@ -24,6 +24,45 @@
  *					This file contains all rare functions.
  */
 
+/**
+ * Same function than javascript unescape() function but in PHP.
+ *
+ * @param 	string	$sourcetodecode		String to decode
+ * @return
+ */
+function jsUnEscape($source)
+{
+    $decodedStr = "";
+    $pos = 0;
+    $len = strlen ($source);
+    while ($pos < $len) {
+        $charAt = substr ($source, $pos, 1);
+        if ($charAt == '%') {
+            $pos++;
+            $charAt = substr ($source, $pos, 1);
+            if ($charAt == 'u') {
+                // we got a unicode character
+                $pos++;
+                $unicodeHexVal = substr ($source, $pos, 4);
+                $unicode = hexdec ($unicodeHexVal);
+                $entity = "&#". $unicode . ';';
+                $decodedStr .= utf8_encode ($entity);
+                $pos += 4;
+            }
+            else {
+                // we have an escaped ascii character
+                $hexVal = substr ($source, $pos, 2);
+                $decodedStr .= chr (hexdec ($hexVal));
+                $pos += 2;
+            }
+        } else {
+            $decodedStr .= $charAt;
+            $pos++;
+        }
+    }
+    return dol_html_entity_decode($decodedStr, ENT_COMPAT);
+}
+
 
 /**
  * Return list of modules directories