function changeFlashFile(){

var mydir = "movie/";

var spring = '4,1' ;
var summer = '7,1' ;
var autumn = '10,1' ;
var winter = '12,1' ;

var nowDay = new Date();

//テスト
//nowDay.setMonth( 1-1 );
//nowDay.setDate( 2 );


mySpring = new Array();
mySpring = spring.split(",");
mySummer = new Array();
mySummer = summer.split(",");
myAutumn = new Array();
myAutumn = autumn.split(",");
myWinter = new Array();
myWinter = winter.split(",");

changeDaySpring = new Date();
changeDaySpring.setMonth( mySpring[0]-1 );
changeDaySpring.setDate( mySpring[1] );

changeDaySummer = new Date();
changeDaySummer.setMonth( mySummer[0]-1 );
changeDaySummer.setDate( mySummer[1] );

changeDayAutumn = new Date();
changeDayAutumn.setMonth( myAutumn[0]-1 );
changeDayAutumn.setDate( myAutumn[1] );

changeDayWinter = new Date();
changeDayWinter.setMonth( myWinter[0]-1 );
changeDayWinter.setDate( myWinter[1] );

/*
if ( nowDay >= changeDaySpring && nowDay < changeDaySummer  ) {
		myfilename = mydir + "spring" + ".swf" ;
	} else if ( nowDay >= changeDaySummer && nowDay < changeDayAutumn  ) {
		myfilename = mydir + "summer" + ".swf" ;
	} else if ( nowDay >= changeDayAutumn && nowDay < changeDayWinter  ) {
		myfilename = mydir + "autumn" + ".swf" ;
	} else if ( nowDay >= changeDayWinter || nowDay < changeDaySpring  ) {
		myfilename = mydir + "winter" + ".swf" ;
}

//document.write ( "nowDay=" + nowDay + "<br><br>\n");
//document.write ( "myfilename=" + myfilename + "<br><br>\n");


document.write("<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=560 height=301>");
document.write("<param name='movie' value='" + myfilename + "'>");
document.write("<param name='quality' value='high'>");
document.write("<embed src='" + myfilename + "' " );
document.write("quality='high' pluginspage='http://www.macromedia.com/go/getflashplayer' type='application/x-shockwave-flash' width=560 height=300></embed></object>");
*/

if ( nowDay >= changeDaySpring && nowDay < changeDaySummer  ) {
		myfilename = mydir + "spring"  ;
	} else if ( nowDay >= changeDaySummer && nowDay < changeDayAutumn  ) {
		myfilename = mydir + "summer"  ;
	} else if ( nowDay >= changeDayAutumn && nowDay < changeDayWinter  ) {
		myfilename = mydir + "autumn"  ;
	} else if ( nowDay >= changeDayWinter || nowDay < changeDaySpring  ) {
		myfilename = mydir + "winter"  ;
}


document.write("<script type='text/javascript'>");
document.write("AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','560','height','301','src','" + myfilename + "','quality','high','pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','" + myfilename + "' );");
document.write("</script>");


}