using jquery ui draggable changes the state of an element from absolute to relative
positioning, which breaks the way our seek button expands itself, so we need to
force absolute positioning, quite uglily, using jquery.
Layout of the unittests directory
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We've got a directory for tests - unittests/tests. Add your tests there. There should be only one file per functionality area tested (i.e - all the
tests about JSONSerializer should be in jsonserializer.js). Your tests should be wrapped in a function named "test_$filename$" where $filename$ is the
name of your file. Don't forget to define a module for your tests and to add a reference to your file in index.html