Hey all. This is my first post to the group. I've got a little GWT/ App Engine web app (at nicksmap.org) I've whipped up that maps New York area craigslist rental listings (yeah, I know, others have done it already, but all of the other implementations miss A LOT of listings and have no flagging features...so I thought there was room for me to go ahead and try to do it right). I've got an RPC that gets called every time a user drags a map. This function (er....method) provides data that is then used to populate the map with markers and correspnding infowindow content. Because of the sheer number of listings I am dealing with, the RPC can often take a few seconds to deliver all of its data, during which time it looks to the user like nothing is happening. I would like to be able to display a loading icon during this time. I'm sure that this is a pretty trivial thing to do -- I'm just not sure how to do it, so thought I should ask the group. Thanks, Nick Zaillian
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