//グローバルナビの数
var preimg = new Array(6);
for (j=1;j<=6;j++){
  preimg[j] = new Image;
  preimg[j].src = pass+"img/gnavi_"+(j)+"_on.jpg";
}


function chimg(over){
img1 = new Image;
img1.src = pass +"img/"+over+"_on.jpg";
document.images[over].src = img1.src;
return true;
}

function bkimg(out){
img2 = new Image;
img2.src = pass +"img/"+out+".jpg";
if(out!=mymenu){
document.images[out].src = img2.src;
}
return true;
}