blankImg = "";
Directorypath = "";

var imgPath = new Array("", "http://gakidai.com/common/images/navi/");
var signOfOn = "_on.jpg";
var signOfOff = "_off.jpg";


function onImg(num,lv){
if(blankImg!="") {
offImg();
}
naviName = "" + num;

img = imgPath[lv] + naviName + signOfOn;
document.images[num].src = img;

Directorypath = lv;
blankImg = num;
}

function offImg(){
naviName = "" + blankImg;
img = imgPath[Directorypath] + naviName + signOfOff;
document.images[blankImg].src = img;
}

function RollOver (obj,val) {
obj.src = val;
}


function Jump(form)
{
var IndexName = form.menu_1.selectedIndex;
var url= form.menu_1.options[IndexName].value;
if (url != "-") location.href = url;
}