diff -ruN moodle-1.7/lib/ajax/section_classes.js moodle-dev/lib/ajax/section_classes.js
--- moodle-1.7/lib/ajax/section_classes.js	2006-09-23 16:11:37.000000000 +0100
+++ moodle-dev/lib/ajax/section_classes.js	2006-10-05 12:40:51.000000000 +0100
@@ -347,12 +347,12 @@
     var tempStore = nextStore = null;
 
     //update in backend
-    targetId='';
-    if (targetel !=null) {
-        targetId=targetel.id;
-    }
+    targetId=this.id;
+
+    targetId = targetId.replace(/section-/i,'');
+
 
-    main.connect('post','class=resource&field=move',null,'id='+el.id+'&beforeId='+targetId+'&sectionId='+this.sectionId);
+    main.connect('post','class=resource&field=move',null,'id='+el.id+'&beforeId='+el.previousId+'&sectionId='+targetId+'&');
 
 
 
@@ -585,6 +585,10 @@
 
     if (this.debug)YAHOO.log("dropped on id="+target+" el = "+this.getEl().id+" x="+YAHOO.util.Dom.getXY(this.getDragEl()));
 
+    var oldid = this.parentObj.id;
+
+    this.previousId = oldid.replace(/section-/i,'');
+
     this.parentObj.remove_resource(this);    
 
     if (target.is == 'resource'||target.is == 'activity') {