Ext.ux.form.MultiSelect滚动条

在Ext.ux.form.MultiSelect的onRender方法中添加autoScroll:true。解决滚动条异常问题。

onRender: function(ct, position){
        Ext.ux.form.MultiSelect.superclass.onRender.call(this, ct, position);

        var fs = this.fs = new Ext.form.FieldSet({
            renderTo: this.el,
            title: this.legend,
            autoScroll:true,
            height: this.height,
            width: this.width,
            style: "padding:0;",
            tbar: this.tbar
        });