jquery treeview plugin change link behavior (avoid collapse)

I am using the jQuery Treeview plugin. Have a look to the "Sample 1 - default" provided on the demo page of the plugin http://jquery.bassistance.de/treeview/demo/. In my case all folders and files are links. If I click for example on the expanded "Folder 2" it will first collapse and then follow to the link location. The behaviour I would like to is, that only collapsed ones w开发者_如何转开发ill expand first and if it already expanded it will stay like this.

The code in the plugin (jquery.treeview.js) which toggle the behaviour is the following:

66 this.filter(":has(>ul):not(:has(>a))").find(">span").click(function(event) {
67 toggler.apply($(this).next());
68 }).add( $("a", this) ).hoverClass(); 

I already figured out how to get all the links, which should be changed:

$('a').parent().parent().filter('.collapsable')

The result will be a array of all li which are currently collapsable (expanded): [li., li.collapsable]

But I don't know how to proceed from there :-( Hopefully someone could help me along...

I already changed sucessfully the linkbehavior for the current selected (class=selected) link with this code:

    $(".current").click(function(e){
        e.preventDefault();
    });

Many thanks in advance!

---

maybe it was not clear what I really want to do so I will try to improve my verbalization next time ;-)

The answer to my own question is:

$('li').filter('.collapsable').find('a:first:not(.current)').click(function(e){
            e.stopImmediatePropagation();
        });

Maybe it helps someone who is looking for something similar.

Best regards!!

UPDATE (the posted solution above does not work if the user expanded a node without reloading the page after)

    $('a').click(function(e){
        if ($(this).is('.current')) {
            e.preventDefault();
        } else if ($(this).parent().parent().is('.collapsable')) {
            e.stopImmediatePropagation();
        };          
    });

This one works as it it supposed to. :-)