ROver = new Array(30);
for(i = 0 ; i < 30 ; i++) {
	ROver[i] = new Image();
	ROver[i].src = "img/" + i + ".gif";
}

imgOn = new Array(19);
for(i = 0 ; i < 19 ; i++) {
	imgOn[i] = i;
}

imgOff = new Array(11);
for(i = 0 ; i < 11 ; i++) {
	imgOff[i] = i + 19;
}

function imgChange(imgId) {
	imgName = "img" + imgId;
	a = imgOn[imgId];
	imgNow = Math.floor(Math.random() * 11);
	imgOn[imgId] = imgOff[imgNow];
	imgOff[imgNow] = a;
	document.images[imgName].src = ROver[imgOn[imgId]].src;
}

function frmcheck() {
	if (self.name != "stmain" && self.name != "nofrm") {
		top.location = "index.html";
	}
}

function frmcheck_e() {
	if (self.name != "stmain" && self.name != "nofrm") {
		top.location = "e/index.html";
	}
}

function noframes() {
	top.location = "main.html";
	top.name = "nofrm";
	return false;
}

function noframes_e() {
	top.location = "main-e.html";
	top.name = "nofrm";
	return false;
}

function frames() {
	top.name = "";
}

function frames_e() {
	top.name = "";
}