var nomeflash="animazione.swf";
var larghezzaflash="770";
var altezzaflash="500";

//---da qui invariato
document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,19,0" width="'+larghezzaflash+'" height="'+altezzaflash+'">');
document.write('<param name="movie" value="'+nomeflash+'">');
document.write('<param name="quality" value="high">');
document.write('<embed src="'+nomeflash+'" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="'+larghezzaflash+'" height="'+altezzaflash+'"></embed>');
document.write('</object>');