Question: How to add from one select list/listbox to another, i'm trying like that butit isn't working.

```
$('#Select1').dblclick(function(){
$('<option name="$("#Select1").
            val()">$("#Select1").
            val()</option>').
                             appendTo('#Select2');
}); 

```

I want on dblclick on one if the items in the listbox = Select1 to be addet to Select2

Answer: 
Let's try:

```
dispatch_async(dispatch_get_main_queue(), ^{

        //your main thread code here

    });

```
Yes you can make use of the method like this

```
[delegate performSelectorOnMainThread:@selector(reloadUserInterface:) withObject:myDict waitUntilDone:YES];

```