Thank you very much for the recommendaions and investigations.

For now I do not have time to work on this.

Simply I recommend to make the changes in grid.jquery.ui.

Open the file and you will see at the beginning the following pice of code:

this can be easy extended as

if ($.ui && $.ui.multiselect && ) {

if($.ui.multiselect.prototype._setSelected) {
    var setSelected = $.ui.multiselect.prototype._setSelected;
    $.ui.multiselect.prototype._setSelected = function(item,selected) {
        var ret = setSelected.call(this,item,selected);
        if (selected && this.selectedList) {
            var elt = this.element;
            this.selectedList.find('li').each(function() {
                if ($(this).data('optionLink'))
                    $(this).data('optionLink').remove().appendTo(elt);
            });
        }
        return ret;
    }

}

if($.ui.multiselect.prototype.destroy) {

// your code here

}
}

I recommend if possible to change the things in grid code instead and do not change multiselect.

At end of week I will play with this.

Best Regards and thanks again

Tony

Only short additional information. Just downloaded jQuery UI 1.8rc2 with jQuery 1.4.2 (from http://blog.jqueryui.com/2010/.....-ui-18rc2/) and tested everything here written one more time. Everything still works exactly as unter jQuery UI 1.8rc1 and jQuery 1.4.2.

Corresponds to just published the widget factory section of the Upgrade Guide to fix problem with $.ui.multiselect.defaults it is recomended to start

$.widget("ui.multiselect", {
    options: {
        sortable: true,
        searchable: true,
        animated: 'fast',
        show: 'slideDown',
        hide: 'slideUp',
        dividerLocation: 0.6,
        nodeComparator: function(node1, node2) {
            var text1 = node1.text(),
                    text2 = node2.text();
            return text1 == text2 ? 0 : (text1 < text2 ? -1 : 1);
        }
    },
    _init: function() {

...

instead of calling

mopts = $.extend({}, $.ui.multiselect.defaults, mopts || {});

before call of call(opts.msel, select, mopts) inside of grid.jqueryui.js. Other changes from "Upgrade Guide" seems me not so important. For example, one recomends to rename _init to _create, but the code in jquery.ui.widget.js in jQuery UI 1.8rc2/rc2 looks like following:

_createWidget: function( options, element ) {

...

        this._create();
        this._init();
    },
    _create: function() {},
    _init: function() {},

    destroy: function() {
...

So both using of _create() or _init() will be working.

Different ways seems to me following to the same result. Currently we needs not make ui.multiselect.js perfect, but only make in working in both jQuery UI 1.8 and jQuery UI 1.7.

Best regards
Oleg

Thanks Oleg. Forgot to fix this in the last moment, but let wait for the final jQueru UI 1.8.

My opinion is not  to cahnge the multiselect widget this way, but rather to set the fix in the grid file.

Best Regards

Tony

In grid.jqueryui.js line 225 should be fixed. Lines 224-225 looks currently like

            var mopts = $.isFunction(opts.msel_opts) ? opts.msel_opts.call(self, opts) : opts.msel_opts;
            call(opts.msel, select, opts.msel_opts);

The line 225 should be fixed to at least following

            call(opts.msel, select, mopts);

Moreover in my tests with jquery-ui-1.8rc1 and jquery-1.4.js was mopts === undefined, which follows to errors inside of call(opts.msel, select, mopts). To fix the problem I had to make following changes:

In grid.jqueryui.js: the line 225 was repleced to the following 3 lines:

            if (mopts === undefined) { mopts = {} }
            if (mopts.dividerLocation === undefined) { mopts.dividerLocation = 0.6; }

            call(opts.msel, select, mopts);

(dividerLocation: 0.6 is the default value for dividerLocation, see line 300 of ui.multiselect.js).

Next change must be done inside of multiselect plugin. In ui.multiselect.js, in the function destroy the line 115 should be changed from

            $.widget.prototype.destroy.apply(this, arguments);

to

        if ($.widget.prototype.destroy !== undefined)
            $.widget.prototype.destroy.apply(this, arguments);

After the changes my project used jqGrid seems works with jquery-ui-1.8rc1 and jquery-1.4.1.js/jquery-1.4.js without any problems.

Best regards

Oleg