function random_msg( ) {

	var r ;
	var xx = new Array( ) ;

		xx.push( '<img src="img/japan201001.gif" border=0 width="640" height="457">' ) ;
		xx.push( '<img src="img/japan201002.gif" border=0 width="640" height="457">' ) ;

	r = Math.floor( Math.random( ) * xx.length ) ;
	document.write( xx[r] ) ;

}