JavaScript 中设置或读取Cookie

JavaScript代码：

<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>