if (document.images) {
    homeButtonup       = new Image();
    homeButtonup.src   = "buttons/home.bmp" ;
    homeButtondown     = new Image() ;
    homeButtondown.src = "buttons/HomeM.bmp" ;

    submissionsButtonup       = new Image();
    submissionsButtonup.src   = "buttons/submissions.bmp" ;
    submissionsButtondown     = new Image() ;
    submissionsButtondown.src = "buttons/SubmissionsM.bmp" ;

    programButtonup       = new Image();
    programButtonup.src   = "buttons/program.bmp" ;
    programButtondown     = new Image() ;
    programButtondown.src = "buttons/ProgramM.bmp" ;

    kddcupButtonup       = new Image();
    kddcupButtonup.src   = "buttons/kddcup.bmp" ;
    kddcupButtondown     = new Image() ;
    kddcupButtondown.src = "buttons/KDDCupM.bmp" ;

    registrationButtonup       = new Image();
    registrationButtonup.src   = "buttons/registration.bmp" ;
    registrationButtondown     = new Image() ;
    registrationButtondown.src = "buttons/RegistrationM.bmp" ;

    travelButtonup       = new Image();
    travelButtonup.src   = "buttons/travel.bmp" ;
    travelButtondown     = new Image() ;
    travelButtondown.src = "buttons/TravelM.bmp" ;

    organizersButtonup       = new Image();
    organizersButtonup.src   = "buttons/organizers.bmp" ;
    organizersButtondown     = new Image() ;
    organizersButtondown.src = "buttons/OrganizersM.bmp" ;


}

function buttondown( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "down.src" );
    }
}
function buttonup ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "up.src" );
    }
}
function SendMail(Login, Server) { 
	window.navigate("mailto:" + Login + "@" + Server); 
}