The HM3 Alpha applet has been updated again. The pattern buttons now work, and the problem where you couldn't manually drag items more than halfway to the left and down has been fixed.
You might need to hit REFRESH in your browser to reload the most current version of the applet if you've been there recently.
Edited To Add: Also, I added a "LegwearMaleBriefs" set of starter items so your guys don't have to be nekkid so much. More of those to come, obviously.