Magento form : Fix region update select box for uniform

form.js

/**
 * Fix for uniform.js
 * Override RegionUpdater class
 */
if (typeof RegionUpdater !== 'undefined') {

    RegionUpdater.prototype.update = RegionUpdater.prototype.update.wrap(function(callOriginal) {

        /* Check uniform */
        if (typeof jQuery !== 'undefined' && typeof jQuery.uniform !== 'undefined') {
            
            if (this.regions[this.countryEl.value]) {
                var i, option, region, def;

                def = this.regionSelectEl.getAttribute('defaultValue');
                if (this.regionTextEl) {
                    if (!def) {
                        def = this.regionTextEl.value.toLowerCase();
                    }
                    this.regionTextEl.value = '';
                }

                this.regionSelectEl.options.length = 1;
                for (regionId in this.regions[this.countryEl.value]) {
                    region = this.regions[this.countryEl.value][regionId];

                    option = document.createElement('OPTION');
                    option.value = regionId;
                    option.text = region.name.stripTags();
                    option.title = region.name;

                    if (this.regionSelectEl.options.add) {
                        this.regionSelectEl.options.add(option);
                    } else {
                        this.regionSelectEl.appendChild(option);
                    }

                    if (regionId == def || (region.name && region.name.toLowerCase() == def) ||
                            (region.name && region.code.toLowerCase() == def)
                            ) {
                        this.regionSelectEl.value = regionId;
                    }
                }

                if (this.disableAction == 'hide') {
                    if (this.regionTextEl) {
                        this.regionTextEl.style.display = 'none';
                        // fix uniform
                        //$(this.regionTextEl.id).hide();
                    }
                    this.regionSelectEl.style.display = '';
                    // fix uniform
                    if($('uniform-' + this.regionSelectEl.id)){
                        $('uniform-' + this.regionSelectEl.id).show();
                    }
                    
                } else if (this.disableAction == 'disable') {
                    if (this.regionTextEl) {
                        this.regionTextEl.disabled = true;
                    }
                    this.regionSelectEl.disabled = false;
                }
                this.setMarkDisplay(this.regionSelectEl, true);
            } else {
                this.regionSelectEl.options.length = 1;
                if (this.disableAction == 'hide') {
                    if (this.regionTextEl) {
                        this.regionTextEl.style.display = '';
                        // fix uniform
                        //$(this.regionTextEl.id).show();
                    }
                    this.regionSelectEl.style.display = 'none';
                    // fix uniform
                    if($('uniform-' + this.regionSelectEl.id)){
                        $('uniform-' + this.regionSelectEl.id).hide();
                    }
                    
                    Validation.reset(this.regionSelectEl);
                } else if (this.disableAction == 'disable') {
                    if (this.regionTextEl) {
                        this.regionTextEl.disabled = false;
                    }
                    this.regionSelectEl.disabled = true;
                } else if (this.disableAction == 'nullify') {
                    this.regionSelectEl.options.length = 1;
                    this.regionSelectEl.value = '';
                    this.regionSelectEl.selectedIndex = 0;
                    this.lastCountryId = '';
                }
                this.setMarkDisplay(this.regionSelectEl, false);
            }

            this._checkRegionRequired();
            // Make Zip and its label required/optional
            var zipUpdater = new ZipUpdater(this.countryEl.value, this.zipEl);
            zipUpdater.update();

        } else {
            callOriginal();
        }

    });
}