/* 画像の先行読み込み */
if(document.images) {
 var imgs = new Array();
 imgs[0] = new Image();  imgs[0].src = "http://suzuki-gumi.co.jp/blog/image/menu_01.jpg"; //上部メニュー
 imgs[1] = new Image();  imgs[1].src = "http://suzuki-gumi.co.jp/blog/image/menu_m_01.jpg";
 imgs[2] = new Image();  imgs[2].src = "http://suzuki-gumi.co.jp/blog/image/menu_02.jpg";
 imgs[3] = new Image();  imgs[3].src = "http://suzuki-gumi.co.jp/blog/image/menu_m_02.jpg";
 imgs[4] = new Image();  imgs[4].src = "http://suzuki-gumi.co.jp/blog/image/menu_03.jpg";
 imgs[5] = new Image();  imgs[5].src = "http://suzuki-gumi.co.jp/blog/image/menu_m_03.jpg";
 imgs[6] = new Image();  imgs[6].src = "http://suzuki-gumi.co.jp/blog/image/menu_04.jpg";
 imgs[7] = new Image();  imgs[7].src = "http://suzuki-gumi.co.jp/blog/image/menu_m_04.jpg";
 imgs[8] = new Image();  imgs[8].src = "http://suzuki-gumi.co.jp/blog/image/menu_05.jpg";
 imgs[9] = new Image();  imgs[9].src = "http://suzuki-gumi.co.jp/blog/image/menu_m_05.jpg";
 imgs[10] = new Image();  imgs[10].src = "http://suzuki-gumi.co.jp/blog/image/menu_06.jpg";
 imgs[11] = new Image();  imgs[11].src = "http://suzuki-gumi.co.jp/blog/image/menu_m_06.jpg";
 imgs[12] = new Image();  imgs[12].src = "http://suzuki-gumi.co.jp/blog/image/menu_07.jpg";
 imgs[13] = new Image();  imgs[13].src = "http://suzuki-gumi.co.jp/blog/image/menu_m_07.jpg";
 imgs[14] = new Image();  imgs[14].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_01.jpg"; //左メニュー
 imgs[15] = new Image();  imgs[15].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_01.jpg";
 imgs[16] = new Image();  imgs[16].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_02.jpg";
 imgs[17] = new Image();  imgs[17].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_02.jpg";
 imgs[18] = new Image();  imgs[18].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_03.jpg";
 imgs[19] = new Image();  imgs[19].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_03.jpg";
 imgs[20] = new Image();  imgs[20].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_04.jpg";
 imgs[21] = new Image();  imgs[21].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_04.jpg";
 imgs[22] = new Image();  imgs[22].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_05.jpg";
 imgs[23] = new Image();  imgs[23].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_05.jpg";
 imgs[24] = new Image();  imgs[24].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_06.jpg";
 imgs[25] = new Image();  imgs[25].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_06.jpg";
 imgs[26] = new Image();  imgs[26].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_07.jpg";
 imgs[27] = new Image();  imgs[27].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_07.jpg";
 imgs[28] = new Image();  imgs[28].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_08.jpg";
 imgs[29] = new Image();  imgs[29].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_08.jpg";
 imgs[30] = new Image();  imgs[30].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_09.jpg";
 imgs[31] = new Image();  imgs[31].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_09.jpg";
 imgs[32] = new Image();  imgs[32].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_10.jpg";
 imgs[33] = new Image();  imgs[33].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_10.jpg";
 imgs[34] = new Image();  imgs[34].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_12.jpg";
 imgs[35] = new Image();  imgs[35].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_12.jpg";
 imgs[36] = new Image();  imgs[36].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_13.jpg"; 
 imgs[37] = new Image();  imgs[37].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_13.jpg";
 imgs[38] = new Image();  imgs[38].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_14.jpg";
 imgs[39] = new Image();  imgs[39].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_14.jpg";
 imgs[40] = new Image();  imgs[40].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_15.jpg";
 imgs[41] = new Image();  imgs[41].src = "http://suzuki-gumi.co.jp/blog/image/left_menu_m_15.jpg";
 imgs[42] = new Image();  imgs[42].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_04.jpg";
 imgs[43] = new Image();  imgs[43].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_m_04.jpg";
 imgs[44] = new Image();  imgs[44].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_05.jpg";
 imgs[45] = new Image();  imgs[45].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_m_05.jpg";
 imgs[46] = new Image();  imgs[46].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_06.jpg";
 imgs[47] = new Image();  imgs[47].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_m_06.jpg";
 imgs[48] = new Image();  imgs[48].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_07.jpg";
 imgs[49] = new Image();  imgs[49].src = "http://suzuki-gumi.co.jp/blog/image/concept_menu_m_07.jpg";

 //以下、
 // img[4] = new Image(); img[4].src = "画像URL";
 // img[5] = new Image(); img[5].src = "画像URL";
 //という風に番号の数字(img[数字])を一つずつ増やすことで
 //いくつでも画像を読み込んでおく事が出来ます。
}

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