// Useful javascript cookie functions.

function getCookie( name ) {
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';

	for ( var i = 0; i < a_all_cookies.length; i++ )
	{
		a_temp_cookie = a_all_cookies[i].split( '=' );
		if ( a_temp_cookie.length == 2 && name == a_temp_cookie[0].replace(/^\s+|\s+$/g, '') )
			return unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
	}
	return null;
}

function setCookie( name, value, expireDays, path, domain, secure ) 
{
	var expires = new Date();
	if ( expireDays )
		expires.setTime( expires.getTime() + expireDays * 24 * 60 * 60 * 1000 );
	document.cookie = name + '=' + escape( value ) +
		( ( expireDays ) ? ';expires=' + expires.toGMTString() : '' ) + 
		( ( path ) ? ';path=' + path : '' ) + 
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}

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

function alertMissingCookies(warning)
{
	var name = 'test';
	if ( !getCookie(name) )
	{
		setCookie( name, 'test value' );
		if ( getCookie( name ) ) 
			deleteCookie(name);	
		else
			alert( warning );
	}
}