dshop = new Array("./images/topimg2.gif","./images/topimg3.gif","./images/topimg4.gif","./images/topimg5.gif","./images/topimg6.gif","./images/topimg7.gif","./images/topimg10.gif");
dshop2 = new Array("./images/topimg_o1.gif","./images/topimg_o2.gif","./images/topimg_o3.gif","./images/topimg_o4.gif","./images/topimg_o5.gif","./images/topimg_o6.gif","./images/topimg_o7.gif");
oshop = new Array();
for(i=0 ; i<dshop2.length ; i++){
oshop[i] = new Image();
oshop[i].src = dshop2[i];
}

function ovshopimg(num){
document.images["menu"+num].src = oshop[num].src;
}

function oushopimg(num){
document.images["menu"+num].src = dshop[num];
}