if (document.images) {          
	
	img1on = new Image();           
	img2on = new Image(); 
	img3on = new Image();
	img4on = new Image();
	img5on = new Image();
	img6on = new Image();
	img7on = new Image();
	img7on = new Image();
	img8on = new Image();
	
	img1off = new Image();                  
	img2off = new Image();
	img3off = new Image();
	img4off = new Image();
	img5off = new Image();
	img6off = new Image();
	img7off = new Image();
	img8off = new Image();
		
	img1on.src = "/images/static/menu/about_on.gif"; 
	img2on.src = "/images/static/menu/products_on.gif";
	img3on.src = "/images/static/menu/credits_on.gif";
	img4on.src = "/images/static/menu/offices_on.gif";
	img5on.src = "/images/static/menu/questions_on.gif";
	img6on.src = "/images/static/menu/photogallery_on.gif";
	img7on.src = "/images/static/menu/contacts_on.gif";
	img8on.src = "/images/static/menu/articles_on.gif";
	
	img1off.src = "/images/static/menu/about_off.gif"; 
	img2off.src = "/images/static/menu/products_off.gif";
	img3off.src = "/images/static/menu/credits_off.gif";
	img4off.src = "/images/static/menu/offices_off.gif";
	img5off.src = "/images/static/menu/questions_off.gif";
	img6off.src = "/images/static/menu/photogallery_off.gif";
	img7off.src = "/images/static/menu/contacts_off.gif";
	img8off.src = "/images/static/menu/articles_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"); }}