if(document.images) {
var imgs = new Array();
imgs[0] = new Image();  imgs[0].src = "img/mainmenu01.gif";
imgs[1] = new Image();  imgs[1].src = "img/mainmenu01_02.gif";
imgs[2] = new Image();  imgs[2].src = "img/mainmenu02.gif";
imgs[3] = new Image();  imgs[3].src = "img/mainmenu02_02.gif";
imgs[4] = new Image();  imgs[4].src = "img/mainmenu03.gif";
imgs[5] = new Image();  imgs[5].src = "img/mainmenu03_02.gif";
imgs[6] = new Image();  imgs[6].src = "img/submenu01.gif";
imgs[7] = new Image();  imgs[7].src = "img/submenu01_02.gif";
imgs[8] = new Image();  imgs[8].src = "img/submenu02.gif";
imgs[9] = new Image();  imgs[9].src = "img/submenu02_02.gif";
imgs[10] = new Image();  imgs[10].src = "img/submenu03.gif";
imgs[11] = new Image();  imgs[11].src = "img/submenu03_02.gif";
imgs[12] = new Image();  imgs[12].src = "../common_img/feedback.gif";
imgs[13] = new Image();  imgs[13].src = "../common_img/feedback_02.gif"; 
imgs[14] = new Image();  imgs[14].src = "img/tohome.gif";
imgs[15] = new Image();  imgs[15].src = "img/tohome_02.gif"; 
imgs[16] = new Image();  imgs[16].src = "../common_img/to_head01.gif";
imgs[17] = new Image();  imgs[17].src = "../common_img/to_head02.gif";
imgs[18] = new Image();  imgs[18].src = "../common_img//2004off.gif";
imgs[19] = new Image();  imgs[19].src = "../common_img//2004on.gif";
imgs[20] = new Image();  imgs[20].src = "../common_img//2005off.gif";
imgs[21] = new Image();  imgs[21].src = "../common_img//2005on.gif";
imgs[22] = new Image();  imgs[22].src = "../common_img//2006off.gif";
imgs[23] = new Image();  imgs[23].src = "../common_img//2006on.gif";
imgs[24] = new Image();  imgs[24].src = "../common_img//2007off.gif";
imgs[25] = new Image();  imgs[25].src = "../common_img//2007on.gif";
imgs[26] = new Image();  imgs[26].src = "../common_img//2008off.gif";
imgs[27] = new Image();  imgs[27].src = "../common_img//2008on.gif";
imgs[28] = new Image();  imgs[28].src = "../common_img//2009off.gif";
imgs[29] = new Image();  imgs[29].src = "../common_img//2009on.gif";
imgs[30] = new Image();  imgs[30].src = "img/submenu04.gif";
imgs[31] = new Image();  imgs[31].src = "img/submenu04_02.gif";
imgs[32] = new Image();  imgs[32].src = "img/submenu_hoshizoranikki01.gif";
imgs[33] = new Image();  imgs[33].src = "img/submenu_hoshizoranikki02.gif";
}

function chgimg(id, imgname) {
if(document.images) {
if(imgs[imgname]) {
document.images[id].src = imgs[imgname].src;
}
else {
document.images[id].src = imgname;
}
}
}