// The random bg to choose
var header_bg = new Array ( );
header_bg[0] = "img/01.jpg";
header_bg[1] = "img/02.jpg";
header_bg[2] = "img/03.jpg";
header_bg[3] = "img/04.jpg";
header_bg[4] = "img/05.jpg";
header_bg[5] = "img/06.jpg";
header_bg[6] = "img/07.jpg";
header_bg[7] = "img/08.jpg";
header_bg[8] = "img/09.jpg";
header_bg[9] = "img/10.jpg";
header_bg[10] = "img/11.jpg";
header_bg[11] = "img/12.jpg";
header_bg[12] = "img/13.jpg";
header_bg[13] = "img/14.jpg";
header_bg[14] = "img/15.jpg";
header_bg[15] = "img/16.jpg";
header_bg[16] = "img/17.jpg";
header_bg[17] = "img/18.jpg";
header_bg[18] = "img/19.jpg";
header_bg[19] = "img/20.jpg";
header_bg[20] = "img/21.jpg";
header_bg[21] = "img/22.jpg";