Fixed issue tuupola#11 by implementing suggested code

Coverted variables describing what's currently selected into an array.
This breaks the tests, as it appears not to be compatible with the
support for multiple parents to a selector.

jquery.chained.js

@@ -35,18 +35,13 @@
                     $(self).html(backup.html());
 
                     /* If multiple parents build classname like foo\bar. */
-                    var selected = "";
+                    var selected = [];
                     $(parent_selector).each(function() {
-                        if ($(":selected", this).val()) {
-                            selected += "\\" + $(":selected", this).val();
-                        }
+                        $(":selected", this).each(function() {
+                            selected.push($(this).val());
+                        });
                     });
-                    selected = selected.substr(1);
 
-                    /* Zepto class regexp dies with classes like foo\bar. */
-                    if (window.Zepto) {
-                        selected = selected.replace("\\", "\\\\");
-                    }
                     /* Also check for first parent without subclassing. */
                     /* TODO: This should be dynamic and check for each parent */
                     /*       without subclassing. */
@@ -59,11 +54,21 @@
                     var selected_first = $(":selected", first).val();
 
                     $("option", self).each(function() {
-                        /* Remove unneeded items but save the default value. */
-                        if (!$(this).hasClass(selected) &&
-                            !$(this).hasClass(selected_first) && $(this).val() !== "") {
-                                $(this).remove();
-                        }
+
+
+                    	var hasSelectedClass = false;
+                    	var classList = ($(this).attr('class') == undefined || "" ) ? [] : $(this).attr('class').split(/\s+/);
+                    	$.each( classList, function(index, item){
+	                    	if (jQuery.inArray(item, selected) >= 0) {
+		                    	hasSelectedClass = true;
+		                    	return;
+	                    	}
+                    	});
+                    	if (!hasSelectedClass &&
+	                    	!$(this).hasClass(selected_first) && $(this).val() !== "") {
+	                    	$(this).remove();
+                    	}
+
                     });
 
                     /* If we have only the default value disable select. */