See the return value of the placeAt method here http://ibm-js.github.io/delite/docs/api/0.5.1/delite/Widget.html and the parameter of the method close here http://ibm-js.github.io/delite/docs/api/0.5.1/delite/popup.html
See the return value of the placeAt method here http://ibm-js.github.io/delite/docs/api/0.5.1/delite/Widget.html and the parameter of the method close here http://ibm-js.github.io/delite/docs/api/0.5.1/delite/popup.html