在客户端设置cooke和获取cooke的函数

<script language="javascript">
function setCookie(name, value, expires, path, domain, secure)
{
var today = new Date();
var expiry = new Date(today.getTime() 7 * 24 * 60 * 60 * 1000);
if(expires==''||expires==null)
{
expires=expiry;
}

var curCookie = name "=" escape(value)
((expires) ? "; expires=" expires.toGMTString() : "")
((path) ? "; path=" path : "")
((domain) ? "; domain=" domain : "")
((secure) ? "; secure" : "");
document.cookie = curCookie;

}

function getCookie(name)
{
var dc = document.cookie;
var prefix = name "=";
var begin = dc.indexOf("; " prefix);
if (begin == -1)
{
begin = dc.indexOf(prefix);
if (begin != 0) return null;
} else
begin = 2;
var end = document.cookie.indexOf(";", begin);
if (end == -1)
end = dc.length;
return unescape(dc.substring(begin prefix.length, end));
}

</script>