javascript 操作Cookies

//获取Cookies的通用方法
function GetCookie (name) 
{
   var arg = name + "=";
   var alen = arg.length;
   var clen = document.cookie.length;
   var i = 0;
   while (i < clen) 
        {
	  var j = i + alen;
	  if (document.cookie.substring(i, j) == arg)
		 return this.getCookieVal (j);
	  i = document.cookie.indexOf(" ", i) + 1;
	  if (i == 0) 
		 break; 
	  }
   return null;
}
//设置Cookies的通用方法 
function SetCookie(name, value) 
{
   var argv = this.SetCookie.arguments;
   var argc = this.SetCookie.arguments.length;
   var expires=new Date(); 
   expires.setTime(expires.getTime()+(3650*24*60*60*1000)); 
   var path = (3 < argc) ? argv[3] : null;
   var domain = (4 < argc) ? argv[4] : null;
   var secure = (5 < argc) ? argv[5] : false;
   document.cookie = name + "=" + escape (value) +
	 ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
	 ((path == null) ? "" : ("; path=" + path)) +
	 ((domain == null) ? "" : ("; domain=" + domain)) +
	((secure == true) ? "; secure" : "");
}