menu_imgs = new Array;
	menu_imgs[0] = new Image(); menu_imgs[0].src = "/img2/secmenu__over.gif";
	menu_imgs[1] = new Image(); menu_imgs[1].src = "/img2/secmenu__over_big.gif";

	menu_imgs[2] = new Image(); menu_imgs[2].src = "/img2/partmenu_home_over.gif";
	menu_imgs[3] = new Image(); menu_imgs[3].src = "/img2/partmenu_about_over.gif";
	menu_imgs[4] = new Image(); menu_imgs[4].src = "/img2/partmenu_shop_over.gif";
	menu_imgs[5] = new Image(); menu_imgs[5].src = "/img2/partmenu_learning_over.gif";
	menu_imgs[6] = new Image(); menu_imgs[6].src = "/img2/partmenu_articles_over.gif";
	menu_imgs[7] = new Image(); menu_imgs[7].src = "/img2/partmenu_links_over.gif";
	
	menu_imgs[10] = new Image(); menu_imgs[10].src = "/img2/bigbutton_home.gif";
	menu_imgs[11] = new Image(); menu_imgs[11].src = "/img2/bigbutton_about.gif";
	menu_imgs[12] = new Image(); menu_imgs[12].src = "/img2/bigbutton_shop.gif";
	menu_imgs[13] = new Image(); menu_imgs[13].src = "/img2/bigbutton_learning.gif";
	menu_imgs[14] = new Image(); menu_imgs[14].src = "/img2/bigbutton_articles.gif";
	menu_imgs[15] = new Image(); menu_imgs[15].src = "/img2/bigbutton_links.gif";
	
	function change_menu_button(act, name, menu_name){
		id = name; 
		if(menu_name == 'partmenu'){
			bb = document.getElementById('bigbutton');
			if(act=='out'){
				bb.src = '/img2/bigbutton_'+this_part+'.gif';
			} else { 
				bb.src = '/img2/bigbutton_'+name+'.gif';
			}
		} else { name = '';	}
		document.getElementById(menu_name+'_'+id).src = '/img2/'+menu_name+'_'+name+'_'+act+'.gif';
	}

	// catalog functions
		
	color_pics = new Array;
	prev_color = new Array;

	function onchange_color(art_id){		
		color_id = eval('document.form' + art_id + '.color.value');
		document.getElementById('colorpic' + art_id).src = color_pics[color_id];
		document.getElementById('sizes' + prev_color[art_id]).style.display = 'none';
		prev_color[art_id] = color_id;
		document.getElementById('sizes' + color_id).style.display = 'block';
	}