// sets a cookie to future date
function setCookie(name,value) 
{
	var expires = new Date(2037,5,25)    
	document.cookie = name + "=" + escape(value) + "; path=/" + ((expires == null) ? "" : ("; expires=" + expires.toGMTString()))
}

function toogleCookie(obj,name) 
{
	if (obj.checked) {
		setCookie(name,"Y")
	}
	else {  
	setCookie(name,"N")
	}
}

// Used for writing data to specified keys in the "SESSION" cookie
function WriteSessionCookieKey(strNewKeyName, NewKeyValue) 
{ 
   var strNewKeyValue = NewKeyValue ;
   var strOldSessionCookieValue = GetSessionCookie() ;
   var strNewKey = strNewKeyName+"="+strNewKeyValue ; 
   if (strOldSessionCookieValue == null)
   { document.cookie = "SESSION=" + strNewKey + "; path=/" ;  }
   else
   {
      var strOldKey = ReadSessionCookieKey(strNewKeyName, false, false) ;
      if (strOldKey == null)
      { document.cookie = strOldSessionCookieValue + "&" + strNewKey + "; path=/" ;  }
      else 
      {  
         strNewCookieValue = strOldSessionCookieValue.replace(strOldKey,strNewKey);
         document.cookie = strNewCookieValue + "; path=/" ;
      }
   }
}   

function GetSessionCookie()
{
   var strCookies = document.cookie ;
   var strSessionCookie = null ;
   if (strCookies.length > 0)                 
   {  
      var strSessionCookieStart = "SESSION=" ; 
      intSessionCkStart = strCookies.indexOf(strSessionCookieStart) ;
      if (intSessionCkStart != -1)   
      {  
         intSessionCkEnd = strCookies.indexOf(";", intSessionCkStart) ;    
         if (intSessionCkEnd == -1)
         {   intSessionCkEnd = strCookies.length ;  }    
         strSessionCookie = strCookies.substring(intSessionCkStart, intSessionCkEnd) ; 
      }
   }
   return strSessionCookie ;    
}

function ReadSessionCookieKey(KeyName, blnJustValue, blnConvert) 
{  
   var strSessionCookieVal = GetSessionCookie() ;
   var strSessionCookieKey = null ;  

   if (typeof(blnJustValue) == "undefined")
   { blnJustValue = true ;}
   if (typeof(blnConvert) == "undefined")
   { blnConvert = true ; }

   if ((strSessionCookieVal != null)&&(KeyName != ""))                                 
   { 
       var intCkKeyStart = strSessionCookieVal.indexOf(KeyName+"=");
       if (intCkKeyStart != -1)                                  //Key exists 
       {  
          if (blnJustValue)
          { intCkKeyStart += KeyName.length + 1 ; }                    // set index of beginning of key value 
          intCkKeyEnd = strSessionCookieVal.indexOf("&", intCkKeyStart); // set index of end of key value   
          if (intCkKeyEnd == -1)
          {   intCkKeyEnd = strSessionCookieVal.indexOf(";", intCkKeyStart) ; }
          if (intCkKeyEnd == -1)
          {   intCkKeyEnd = strSessionCookieVal.length  ; }    
          strSessionCookieKey = strSessionCookieVal.substring(intCkKeyStart, intCkKeyEnd)  ;
       }
    } 
    return strSessionCookieKey ;
}