JavaScript 中设置或读取Cookie

<script language="javascript" type="text/javascript">

var myStyle;
setCookie('myMenu', myStyle, '1');

function setCookie(name,value,date)
{
var Days = date;
var exp   = new Date();
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape (value) ;//+ ";expires=" + exp.toGMTString()
}
function getCookie(name)
{
var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
if(arr != null) return unescape(arr[2]); return null;
}
function delCookie(name)
{
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getCookie(name);
if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}

</script>