function unv(imgname, imgdir, imgof) {
	if (navigator.appVersion > "3") {
		imgnum = new Image();
		dirclass = "";
		for (i = 0; i < imgdir; i++){
			dirclass += "../";
		}
		if( imgof == 0 ){
			imgnum.src = dirclass+"img/glb/img_"+imgname+".gif";
		}else if( imgof == 1 ){
			imgnum.src = dirclass+"img/glb/img_"+imgname+"_on.gif";
		}
		document.images[imgname].src = imgnum.src;
	}
}

function lnv(imgname, imgdir, imgof) {
	if (navigator.appVersion > "3") {
		imgnum = new Image();
		dirclass = "";
		if( imgof == 0 ){
			imgnum.src = "img/img_"+imgname+".gif";
		}else if( imgof == 1 ){
			imgnum.src = "img/img_"+imgname+"_on.gif";
		}
		document.images[imgname].src = imgnum.src;
	}
}