Made the auto submit script more versatile

When a <select> tag has the class "quickselect", this script will
automatically submit its parent form when the select value changes.
It also hides the submit button of the form.

lib/scripts/script.js

@@ -460,19 +460,29 @@ addInitEvent(function(){
 });
 
 /**
- * Add the event handler to the actiondropdown
+ * Autosubmit quick select forms
+ *
+ * When a <select> tag has the class "quickselect", this script will
+ * automatically submit its parent form when the select value changes.
+ * It also hides the submit button of the form.
  *
  * @author Andreas Gohr <andi@splitbrain.org>
  */
 addInitEvent(function(){
-    var selector = $('action__selector');
-    if(!selector) return;
-
-    addEvent(selector,'change',function(e){
-        this.form.submit();
-    });
-
-    $('action__selectorbtn').style.display = 'none';
+    var selects = getElementsByClass('quickselect',document,'select');
+    for(var i=0; i<selects.length; i++){
+        // auto submit on change
+        addEvent(selects[i],'change',function(e){
+            this.form.submit();
+        });
+        // hide submit buttons
+        var btns = selects[i].form.getElementsByTagName('input');
+        for(var j=0; j<btns.length; j++){
+            if(btns[j].type == 'submit'){
+                btns[j].style.display = 'none';
+            }
+        }
+    }
 });
 
 /**