function getCookie(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 setCookie(name, value, expires, path, domain, secure ){
	var today = new Date();
	today.setTime(today.getTime());
	if (expires ){
		expires = expires * 1000 * 60;
	}

	var expires_date = new Date(today.getTime()+ (expires));

	document.cookie = name+'='+escape(value )+
	((expires )? ';expires='+expires_date.toGMTString(): '' )+ //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 00:00:01 GMT';

}