dojox.widget.Loader div "blocks" content underneath when invisible

[guest]

I have implemented the dojox.widget.Loader as a div centered on the page. When nothing is loaded and the div is hidden, I can't click on anything underneath the div's position. It's hidden, but it's still there.

I have solved this by giving the loader widget a unique id and calling document.getElementById("loader").style.display = "none"; at the end of the _hide function and document.getElementById("loader").style.display = ""; at the beginning of the _show function, but it's just a workaround.

[bill]

mark all (open) tickets w/blank milestones to be "tbd"; their milestones need to be set to a version number or to "future"

[dante]

(In [14605]) fixes #6097 - set display on the loading div before show and after hide to prevent blockage, and also cleanup the Loader/ folder to not include a sample php script or README.