var hide_sub_menu=null;

function active_this(id){

	menu_button="menu_button_"+id;
	sub_menu="sub_menu_"+id;

	document.getElementById(menu_button).src="img/active/"+id+".gif";
	document.getElementById(sub_menu).style.display="block";

}

function deactive_this(id,time){

	hide_sub_menu=setTimeout("hide_now("+id+")",time);

}

function hide_now(id){

	menu_button="menu_button_"+id;
	sub_menu="sub_menu_"+id;

	document.getElementById(menu_button).src="img/unactive/"+id+".gif";
	document.getElementById(sub_menu).style.display="none";

}