function show_menu(now_num) { 	
 var max_num = 4;
 var link_url = "knitted-wear-";
 var css_1 = "on";
 var css_2 = "off";
 for (var i=1; i<max_num;i++) {
	if(i == now_num) {
		document.write(" &nbsp;&nbsp;<a href='"+ link_url + i + ".htm' id = "+ css_1 + "> " + i + " </a> ");
	}else{
		document.write("  &nbsp;&nbsp;<a href='"+ link_url + i + ".htm' id = "+ css_2 + "> " + i + " </a> ");
		}
	} 
}