<!----
image1 = new Image();
image1.src = "img_box/A_info.gif";

image2 = new Image();
image2.src = "img_box/A_kensaku.gif";

image3 = new Image();
image3.src = "img_box/A_event.gif";

image4 = new Image();
image4.src = "img_box/A_maturi.gif";


 function light(num) {
 if (num== 1) document.button1.src= image1.src;
 if (num== 2) document.button2.src = image2.src;
 if (num== 3) document.button3.src = image3.src;
 if (num== 4) document.button4.src = image4.src;
}
function dark(num) {
 if (num == 1) document.button1.src = "img_box/info.gif";
 if (num == 2) document.button2.src = "img_box/kensaku.gif";
 if (num == 3) document.button3.src = "img_box/event.gif";
 if (num == 4) document.button4.src = "img_box/maturi.gif";

}
 
//---->