function showmenu(obj){
	var id = obj.id;
	var menubox;
	var menuimg;
	for(var i=1;i<=5;i++){
		menubox = document.getElementById('top_submenu'+i);
		menuimg = document.getElementById('top_submenu_btnimg'+i);
		if(id=='top_submenu_a'+i){
			menubox.style.display = 'block';
			menuimg.src           = '../images/menu0'+i+'_over.gif';
		}else{
			menubox.style.display = 'none';
			menuimg.src           = '../images/menu0'+i+'.gif';
		}
	}
}

document.write('<script type="text/javascript" src="../js/prototype1.6.js"><\/script>');