var preloadFlag = false;

if (document.images) {
var img_data = new Array();
for(i=0;i<=100;i++) { img_data[i] = new Image(); }
}

function def_preloadImages(pos) {
if (document.images) {
img_data[50].src = pos+"images/navi_top_off.gif";
img_data[51].src = pos+"images/navi_top_on.gif";
img_data[52].src = pos+"images/navi_money_off.gif";
img_data[53].src = pos+"images/navi_money_on.gif";
img_data[54].src = pos+"images/navi_data_off.gif";
img_data[55].src = pos+"images/navi_data_on.gif";
img_data[56].src = pos+"images/navi_down_off.gif";
img_data[57].src = pos+"images/navi_down_on.gif";
img_data[58].src = pos+"images/navi_kanmi_off.gif";
img_data[59].src = pos+"images/navi_kanmi_on.gif";
img_data[60].src = pos+"images/navi_kodawari_off.gif";
img_data[61].src = pos+"images/navi_kodawari_on.gif";

img_data[62].src = pos+"images/navi_top_over.gif";
img_data[63].src = pos+"images/navi_money_over.gif";
img_data[64].src = pos+"images/navi_data_over.gif";
img_data[65].src = pos+"images/navi_down_over.gif";
img_data[66].src = pos+"images/navi_kanmi_over.gif";
img_data[67].src = pos+"images/navi_kodawari_over.gif";

img_data[95].src = pos+"images/navi_sub_money_osaifu.gif";
img_data[96].src = pos+"images/navi_sub_money_konnatokoronimo.gif";
img_data[97].src = pos+"images/navi_subsub_boatpia.gif";
//img_data[98].src = pos+"images/navi_sub_money.gif";
img_data[99].src = pos+"images/navi_sub_kanmi.gif";
img_data[100].src = pos+"images/spacer.gif";

preloadFlag = true;

}
}

function rov(name,num){
if (document.images && (preloadFlag == true)) {
document.images[name].src=img_data[num].src;
return true;
}
}