//
// ys.js - Common Routines
//

var ImagePath = "../images/";

function CheckUA()
{
	if (navigator.appName.charAt(0) == "N") {
		return (navigator.appVersion.charAt(0) == 3) ? false : true;
	}
	if (navigator.appName.charAt(0) == "M") {
		return true;
	}
	return false;
}

function ApplyImage(id, file)
{
	if (CheckUA()) {
		document.images[id].src = ImagePath + file;
	}
}

function NaviOn(id)
{
	ApplyImage(id, "l_" + id + "1.gif");
}

function NaviOff(id)
{
	ApplyImage(id, "l_" + id + "0.gif");
}