function move_up() {	var move = getCookie('move');	if (move == '') return false;		var menu = document.getElementById('menu');	menu.scrollTop = move;		// should i delete the cookie here	// or reset it to zero}function do_click(){	moved = document.getElementById('menu');	moved = moved.scrollTop;		// record the cookie	setCookie('move', moved, 1);}function getCookie(c_name){	if (document.cookie.length > 0)	{		c_start = document.cookie.indexOf(c_name + "=")		if (c_start != -1)		{ 			c_start = c_start + c_name.length + 1 			c_end = document.cookie.indexOf(";", c_start)						if (c_end == -1) c_end = document.cookie.length			return unescape(document.cookie.substring(c_start, c_end))		} 	}	return 0;}function setCookie(c_name,value,expiredays){	var exdate = new Date();	exdate.setDate(exdate.getDate() + expiredays);	document.cookie = c_name + "=" + escape(value) +	((expiredays==null) ? "" : ";expires=" + exdate.toGMTString()) + '; path=/';}