/*
  Script Name: Javascript Cookie Script
  Author: Public Domain, with some modifications
  Script Source URI: http://techpatterns.com/downloads/javascript_cookies.php
  Version 1.0.0
  Last Update: 30 May 2004

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
function Get_Cookie( name ) {
    var start = document.cookie.indexOf( name + "=" );
    var len = start + name.length + 1;
    if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) )
	{
            return null;
	}
    if ( start == -1 ) return null;
    var end = document.cookie.indexOf( ";", len );
    if ( end == -1 ) end = document.cookie.length;
    return unescape( document.cookie.substring( len, end ) );
}

function getExpiresDate(expires) {
    // set time, it's in milliseconds
    var today = new Date();
    today.setTime( today.getTime() );

    /*
     if the expires variable is set, make the correct
     expires time, the current script below will set
     it for x number of days, to make it for hours,
     delete * 24, for minutes, delete * 60 * 24
     */
    if ( expires ) {
        expires = expires * 1000 * 60 * 60 * 24;
    }
    return new Date( today.getTime() + (expires) );
}

/*
  only the first 2 parameters are required, the cookie name, the cookie
  value. Cookie time is in milliseconds, so the below expires will make the
  number you pass in the Set_Cookie function call the number of days the cookie
  lasts, if you want it to be hours or minutes, just get rid of 24 and 60.

  Generally you don't need to worry about domain, path or secure for most applications
  so unless you need that, leave those parameters blank in the function call.
*/
function Set_Cookie( name, value, expires, path, domain, secure ) {
    var expires_date = waGetExpiresDate(expires);
    document.cookie = name + "=" +escape( value ) +
        ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + //expires.toGMTString()
        ( ( path ) ? ";path=" + path : "" ) +
        ( ( domain ) ? ";domain=" + domain : "" ) +
        ( ( secure ) ? ";secure" : "" );
}

function Delete_Cookie( name, path, domain ) {
    if ( Get_Cookie( name ) ) document.cookie = name + "=" +
                                  ( ( path ) ? ";path=" + path : "") +
                                  ( ( domain ) ? ";domain=" + domain : "" ) +
                                  ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function waGetExpiresDate(expires) {
    // set time, it's in milliseconds
    var today = new Date();
    today.setTime( today.getTime() );
    // if the expires variable is set, make the correct expires time, the
    // current script below will set it for x number of days, to make it
    // for hours, delete * 24, for minutes, delete * 60 * 24
    if (expires) {
        expires = expires * 1000 * 60 * 60 * 24;
    }
    var expires_date = new Date( today.getTime() + (expires) );
    //Set to expire at 5:00am but use GMT time.
    expires_date.setUTCHours(10);
    expires_date.setUTCMinutes(0);
    expires_date.setUTCSeconds(0);

    return expires_date;
}