Modal

modal.js

requires: yui2-container

//declaration
  var YAHOO = Y.YUI2;
        var myPopup = function (modalElement) {

            //create a locally scoped YUI panel
            var modal = new YAHOO.widget.Panel(modalElement, {
                fixedcenter: true,
                visible: false,
                modal: true,
                close: false,
                underlay: 'none'
            });

            //Show method of this object
            this.show = function () {
                modal.show();
            };

            //Hide method of this object
            this.hide = function () {
                modal.hide();
            }

        };

 var newPopup = new myPopup("mywmodal");