var img = new Array();

/*--- menu ---*/
img[0] = new Image(); img[0].src = "./image/button_corp.jpg";
img[1] = new Image(); img[1].src = "./image/button_corp_select.jpg";

img[2] = new Image(); img[2].src = "./image/button_gyomu.jpg";
img[3] = new Image(); img[3].src = "./image/button_gyomu_select.jpg";

img[4] = new Image(); img[4].src = "./image/button_form.jpg";
img[5] = new Image(); img[5].src = "./image/button_form_select.jpg";

img[6] = new Image(); img[6].src = "./image/button_corp_s.jpg";
img[7] = new Image(); img[7].src = "./image/button_corp_s_select.jpg";

img[8] = new Image(); img[8].src = "./image/button_gyomu_s.jpg";
img[9] = new Image(); img[9].src = "./image/button_gyomu_s_select.jpg";

img[10] = new Image(); img[10].src = "./image/button_form_s.jpg";
img[11] = new Image(); img[11].src = "./image/button_form_s_select.jpg";

img[12] = new Image(); img[12].src = "./image/button_home_s.jpg";
img[13] = new Image(); img[13].src = "./image/button_home_s_select.jpg";


/*--- function: mouse-over action ---*/
function m_over(nam,num) { document.images[nam].src = img[num].src; }