function chimg_top_2(){
document.top_img.src="image/top_2.gif";
}
function chimg_top_1(){
document.top_img.src="image/top_1.gif";
}
function access_img_2(){
document.access_img.src="../image/2_2.gif";
}
function access_img_1(){
document.access_img.src="../image/2_1.gif";
}


function 1_img_2(){
document.1_img.src="./image/1_2.gif";
}
function 1_img_1(){
document.1_img.src="./image/1_1.gif";
}
function ac_img_2(){
document.ac_img.src="./image/ac_2.gif";
}
function ac_img_1(){
document.ac_img.src="./image/ac_1.gif";
}
function 3_img_2(){
document.3_img.src="./image/3_2.gif";
}
function 3_img_1(){
document.3_img.src="./image/3_1.gif";
}
function 4_img_2(){
document.4_img.src="./image/4_2.gif";
}
function 4_img_1(){
document.4_img.src="./image/4_1.gif";
}
function 5_img_2(){
document.5_img.src="./image/5_2.gif";
}
function 5_img_1(){
document.5_img.src="./image/5_1.gif";
}
function 6_img_2(){
document.6_img.src="./image/6_2.gif";
}
function 6_img_1(){
document.6_img.src="./image/6_1.gif";
}
function 7_img_2(){
document.7_img.src="./image/7_2.gif";
}
function 7_img_1(){
document.7_img.src="./image/7_1.gif";
}
function premon_2(){
document.premon.src="./image/premon_2.gif";
}
function premon_1(){
document.premon.src="./image/premon_1.gif";
}
function nexmon_2(){
document.nexmon.src="./image/nexmon_2.gif";
}
function nexmon_1(){
document.nexmon.src="./image/nexmon_1.gif";
}