function el(i) { return document.getElementById(i); }
function hide(id) { var sty = el(id).style; sty.visibility = 'hidden'; sty.position = 'absolute'; }
function show(id) { var sty = el(id).style; sty.visibility = 'visible'; sty.position = 'static'; }
function setCookie(name,value,days) {
	var expires = "";
	if (days) { var date = new Date(); date.setTime(date.getTime()+(days*24*60*60*1000)); var expires = "; expires="+date.toGMTString(); }
	document.cookie = name+"="+value+expires+"; path=/";
}
function getCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) { 
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}