var lastMovieNum = 0;
    // Pick movie number
    var randomNum = Math.round(Math.random() * 3);
    // Ensure it's not the same as last time
    while (randomNum == lastMovieNum) {
        var randomNum = Math.round(Math.random() * 3);
    }
    lastMovieNum = randomNum;
    
    var movieFilename = 'http://carnivalwarehouse.com/ads/banners/' + randomNum + '_forum.swf';
    
    function movie(movieFilename){
        document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=4,0,2,0" width="728" height="90">');
        document.write('<param name="movie" value="' + movieFilename + '">');
        document.write('<param name="quality" value="high">');
        document.write('<embed src="' + movieFilename + '" quality="high" pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="728" height="90"></embed>');
        document.write('</object>');
    }