// -------------------------------------------------------------------------
// --- クッキーを設定するスクリプト ---
// -------------------------------------------------------------------------

function getCookie( name )
{
	var cname = name + "=" ;
	var dc = document.cookie ;
	var begin ;
	var end ;

	if ( dc.length > 0 )
	{
		begin = dc.indexOf( cname ) ;

		if ( begin != -1 )
		{
			begin += cname.length ;
			end = dc.indexOf( ";", begin ) ;

			if ( end == -1 )
			{
				end = dc.length ;
			}

			return unescape ( dc.substring( begin,end ) ) ;
		}
	}

	return null ;
}

function setCookie( cName, cValue, cPath, cExpiresDay )
{
	var cValue = escape( cValue ) ;
	var cPath = ( cPath ) ? cPath : '/' ;
	var expDay = null ;
	var expValue = "" ;

	if ( cExpiresDay )
	{
		expDay = new Date( ) ;
		expDay.setTime( exp.getTime( ) + ( 1000 * 60 * 60 * 24 * cExpiresDay ) ) ;
		expValue = ';expires='+ expDay.toGMTString( ) ;
	}

	document.cookie = cName + "=" +cValue+ ";path=" + cPath + expValue ;
}

function delCookie( name )
{
	document.cookie = name + "=;expires=Thu,01-Jan-70 00:00:01 GMT";
}