Tomas Lygutas 6d5c61b7bc Fix ajaxviewer.js to solve console on Firefox (#1655)
Mozilla Firefox displays white tile in place of cursor. The reason - function isImageLoaded() always returns true after first load and function checkUpdate() reloads too fast. 
Suggested fix - in refresh() method state imageLoaded should be reverted to false. This ensures that function checkUpdate() processes only when tile image is loaded.
2017-07-27 13:46:35 +02:00
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