function mt_createCookie( name, value, expires, path, domain, secure ) {

	var today = new Date();
	today.setTime( today.getTime() );
	
	var expires_date;
	if ( expires ) {
		if(expires > 0 ) {
			expires = expires * 1000 * 60 * 60 * 24;
		}
		else {
			expires_date = new Date( 0 );
		}
	}
	if( !expires_date ) {
		expires_date = new Date( today.getTime() + (expires) );
	}
	
	document.cookie = name + "=" +escape( value ) +
		( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
		( ( path ) ? ";path=" + path : ";path=/" ) + 
		( ( domain ) ? ";domain=" + domain : "" ) +
		( ( secure ) ? ";secure" : "" );
}

function mt_readCookie(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 unescape(c.substring(nameEQ.length,c.length));
	}
	return null;
}

function mt_eraseCookie(name, path, domain ) {
	mt_createCookie(name,"",-1, path, domain );
}