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 * 60 * 24;     
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) 
		+ ( ( expires ) ? ';expires='+expires_date.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'; 
}