function get_session_cookie(Name) {

  var search = Name + "="
  var returnvalue = "";
  if (document.cookie.length > 0) {
    offset = document.cookie.indexOf(search)
    // if cookie exists
    if (offset != -1) { 
      offset += search.length
      // set index of beginning of value
      end = document.cookie.indexOf(";", offset);
      // set index of end of cookie value
      if (end == -1) end = document.cookie.length;
      returnvalue=unescape(document.cookie.substring(offset, end))
      }
   }
  return returnvalue;
}

function set_session_cookie (name, value) 

   {

   var argv = set_session_cookie.arguments;

   var argc = set_session_cookie.arguments.length;

   var expires = (2 < argc) ? argv[2] : null;

   var path = (3 < argc) ? argv[3] : "/";

   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" : "");

   }


function del_session_cookie (name) 

   {

	set_session_cookie (name, "");

   }