if (document.images) 
		{
		var about_on = new Image(); about_on.src =  '/images/global/btn_about_on.gif';
		var about_off = new Image();about_off.src = '/images/global/btn_about_off.gif';
		var artists_on = new Image(); artists_on.src =  '/images/global/btn_artists_on.gif';
		var artists_off = new Image();artists_off.src = '/images/global/btn_artists_off.gif';
		var services_on = new Image(); services_on.src =  '/images/global/btn_services_on.gif';
		var services_off = new Image();services_off.src = '/images/global/btn_services_off.gif';
		var news_on = new Image(); news_on.src =  '/images/global/btn_news_on.gif';
		var news_off = new Image();news_off.src = '/images/global/btn_news_off.gif';
		var contact_on = new Image(); contact_on.src =  '/images/global/btn_contact_on.gif';
		var contact_off = new Image();contact_off.src = '/images/global/btn_contact_off.gif';
		var home_on = new Image(); home_on.src =  '/images/global/btn_home_on.gif';
		var home_off = new Image();home_off.src = '/images/global/btn_home_off.gif';
		}

	function imgOn(imgName) 
		{if (document.images){document[imgName].src = eval(imgName + "_on.src");}}
				
	function imgOff(imgName) 
		{if (document.images){document[imgName].src = eval(imgName + "_off.src");}}