browserName = navigator.appName;
	browserVer = parseInt(navigator.appVersion);

		if (browserName == 'Netscape' && browserVer >= 3) {
			init = 'net';
		}
		else {
			init = 'ie';
		}

	if ((init == 'net')||((init == 'ie')&&(browserVer >= 4))) {
		i1on = new Image;
		i1on.src = 'dimg/menu_on_1.gif';
		i1off = new Image;
		i1off.src = 'dimg/menu_1.gif';

		i2on = new Image;
		i2on.src = 'dimg/menu_on_2.gif';
		i2off = new Image;
		i2off.src = 'dimg/menu_2.gif';

		i3on = new Image;
		i3on.src = 'dimg/menu_on_3.gif';
		i3off = new Image;
		i3off.src = 'dimg/menu_3.gif';

		i4on = new Image;
		i4on.src = 'dimg/menu_on_4.gif';
		i4off = new Image;
		i4off.src = 'dimg/menu_4.gif';

		i5on = new Image;
		i5on.src = 'dimg/menu_on_5.gif';
		i5off = new Image;
		i5off.src = 'dimg/menu_5.gif';

		i6on = new Image;
		i6on.src = 'dimg/menu_on_6.gif';
		i6off = new Image;
		i6off.src = 'dimg/menu_6.gif';

		i7on = new Image;
		i7on.src = 'dimg/menu_on_7.gif';
		i7off = new Image;
		i7off.src = 'dimg/menu_7.gif';

		i8on = new Image;
		i8on.src = 'dimg/menu_on_8.gif';
		i8off = new Image;
		i8off.src = 'dimg/menu_8.gif';
		}

	function on(imgName) {
		if (((init == 'net')&&(browserVer >=3))||((init == 'ie')&&(browserVer >= 4))) {
			imgOn = eval(imgName + 'on.src');
			document[imgName].src = imgOn;
		}
	}

	function off(imgName) {
		if (((init == 'net')&&(browserVer >=3))||((init == 'ie')&&(browserVer >= 4))) {
			imgOff = eval(imgName + 'off.src');
			document[imgName].src = imgOff;
		}
	}