By Paul Radford
VIENNA, June 6 (Reuters) - On the eve of Euro 2008, European soccer chief Michel Platini called on players and fans on Friday to enjoy a great tournament in a party atmosphere but urged them to show respect and shun bad behaviour.
The three-week, 16-nation tournament, which organisers expect to attract five million visitors to joint host countries Austria and Switzerland, starts on Saturday when the Swiss take on Czech Republic in Basel.
Platini, the former French captain who became president of European soccer's governing body UEFA last year, gave an upbeat news conference in Basel as he launched the first major tournament of his term of office.
"The party is about to start," he said. "There will be a lot of laughing, a lot of crying, there will be pain and joy and at the end there will be one winner -- that's the best team.
"We want the Euros to convey messages of respect, for the teams, for the national anthems, respect for the differences and diversity of the nations.
"We want the players to show respect to the referees. The referees committee have visited all the teams to tell them exactly what will and will not be tolerated here.
"I have no real worries about what will happen on the pitch, the players are adult, they are professional. But let me say this -- as the president, there will be zero tolerance for any trouble on the pitch or in the stands."
NO FAVOURITES
While the president was addressing some of the 10,000 media gathered for the tournament, coaches of the four teams playing on the opening day were assessing the fitness and form of their players ahead of what is widely seen as a tournament with no clear favourites.
Apart from the Swiss-Czech encounter in Basel, which kicks off at 1600 GMT, Portugal and Turkey play in the other Group A match in Geneva at 1845 GMT.
The Swiss team had extra concerns and prepared a contingency plan in case experienced coach Koebi Kuhn has to quit the team because of the serious illness of his wife, hospitalised since having an epileptic fit on Monday.
Portugal were also trying hard to keep their minds on the match with Turkey despite almost frenzied media speculation about the futures of coach Luiz Felipe Scolari and key player Cristiano Ronaldo.
Scolari refused to answer journalists' questions on whether he might take over as Chelsea manager after the tournament and he made it clear Ronaldo, widely expected to be the top player of the tournament, would similarly not be discussing whether he was likely to move from Manchester United to Real Madrid.
Security in both countries was stepped up with border checks to stop known hooligans from entering.
Foreign police officers have been stationed in host cities, and information exchange centres are active in both countries, tracking the movements of potentially volatile fans.
If organisers were relieved that England, whose fans have caused problems at some past tournaments, failed to qualify this time then no one would state it directly.
Asked about it, Platini said: "England never had a monopoly on hooligans. I just hope no hooligans come out, no people looking to cause trouble, no wet blankets.
"What I will say is that the 16 teams here are the 16 best in Europe. England just has to take the necessary steps if it wants to qualify next time."
(Editing by Jon Bramley)