function selectSwf() {

  var swf = new Array();

	swf[0] = "img/mniigata.swf"

/*
	swf[1] = "img/mustang.swf"
	swf[2] = "img/mustang.swf"
*/

	n = Math.floor(Math.random() * swf.length)

  writeSwf( swf[n] ,'300' , '250' , '' , '' , '')

}

function writeSwf( swf , width , height , mon , day , week ) {

  var htm = ""

  htm+="<object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000'"
  htm+="        codebase='http://download.macromedia.com/pub/shockwave/"
                    htm+="cabs/flash/swflash.cab#version=8,0,0,0'"
  htm+="        width   = " + width
  htm+="        height  = " + height + ">"
  htm+="<param  name=allowScriptAccess value=always />"
  htm+="<param  name    = movie value=" + swf
  htm+="?mon=" + mon
  htm+="&amp;day=" + day
  htm+="&amp;week=" + week
  htm+=" >"
  htm+="<param  name    = quality value=high>"
  htm+="<embed  src     = " + swf
  htm+="?mon=" + mon
  htm+="&amp;day=" + day
  htm+="&amp;week=" + week
  htm+="        allowScriptAccess=always "
  htm+="        quality = high  "
  htm+="        width   = "+ width
  htm+="        height  = " + height
  htm+="        type    = 'application/x-shockwave-flash' "
  htm+="        pluginspage='http://www.macromedia.com/go/getflashplayer'>"
  htm+="</embed>"
  htm+="</object>"
  
  document.write(htm)
}