Checkbox List Select/Deselect using JavaScript

function Select(Select)
          {
            for (var n=0; n < document.forms[0].length; n++)
                if (document.forms[0].elements[n].type=='checkbox')
                    document.forms[0].elements[n].checked=Select;            
            return false;
           }

<a href="javascript:void(0)" style="font-weight: bold; text-decoration: none; color: Blue;"
                                                                        onclick="javascript:Select(true)">Check all</a> | <a href="javascript:void(0)" style="font-weight: bold;
                                                                            text-decoration: none; color: Blue;" onclick="javascript:Select(false)">Un-check
                                                                            all</a>

Creating/Expiring Cookies

Creating Cookie :
-------------------
      
        HttpCookie myCookie = new HttpCookie("UserSettings");
        myCookie["UserID"] = strUserID;
        myCookie["Name"] = strName;
        myCookie.Expires = DateTime.Now.AddDays(1d);
        Response.Cookies.Add(myCookie);

Geting Cookie Values :
------------------------
if (Request.Cookies["UserSettings"] != null)
            {               
                if (Request.Cookies["UserSettings"]["UserID"] != null)
                    Session["UserID"] = Request.Cookies["UserSettings"]["UserID"];

                if (Request.Cookies["UserSettings"]["RewritePhyName"] != null)
                    Session["Name"] = Request.Cookies["UserSettings"]["Name"];
            } 

Expiring Cookie :
---------------------

if (Request.Cookies["UserSettings"] != null)
                {
                    HttpCookie myCookie = new HttpCookie("UserSettings");
                    myCookie.Expires = DateTime.Now.AddDays(-1d);
                    Response.Cookies.Add(myCookie);
                }