function setCookie(name, value, days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function getCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function switchSound() {

	// read cookie
	var cookie_value = getCookie("sound");
	
	var flashObject = document.getElementById( "flash_object" );
	if (flashObject) {
		var embed = flashObject.getElementsByTagName( "embed" );
		if ( embed && embed.length > 0 ) {
			flashObject = embed[0];
		}
	}

	if (!cookie_value || cookie_value == 1) {
	  // turn of sound
	  setCookie("sound", 0);
	  if (flashObject) {
	  	flashObject.SetVariable( "sound", 0 );
	  }
	  return 0;
	}
	else {
	  // turn on sound
	  setCookie("sound", 1);
	  if (flashObject) {
	  	flashObject.SetVariable( "sound", 1 );
		}
	  return 1;
	}
}