if (screenheight < 768) {
 var flash_obj = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"' +
                 'codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0"' +  'width="225" height="305">' + '<param name="movie" value="nav800.swf">' +
      '<param name="quality" value="high">' +
      '<embed src="nav800.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="225" height="305"></embed>' +
    '</object>';
} else {
var flash_obj = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"' +
                'codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="300" height="396">' +
      '<param name="movie" value="nav1024.swf">' +
      '<param name="quality" value="high">' +
      '<embed src="nav1024.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="300" height="396"></embed>' +
    '</object>';
}
document.writeln(flash_obj);