Celtic and Rangers have both been ordered to play their next home Scottish Cup matches behind closed doors after last season's quarter-final was marred by fan disorder.Both teams will also have to pay £100,000 to the team they are drawn against in that fixture.The two clubs could also face a second home match without supporters if there is a further incident of either side's supporters engaging in "unacceptable conduct" in a Scottish Cup fixture.Celtic progressed to last season's semi-fina