/** 
  * Cookie script - Scott Andrew
  * Copyright 2005, Sandeep Gangadharan 
  * http://www.sivamdesign.com/scripts/dwld/memCheck.html 
  * 
  * Modified by AZastashkov
  * Topcon Positioning Systems 
  */
function newCookie( name, value, days ) {
    if ( days == null )
        days = 14; // two weeks by default the cookie to last          
    
    var expires = "";
    if ( days ) {
        var date = new Date();
        date.setTime( date.getTime() + ( days * 24 * 60 * 60 * 1000) );
        expires = "; expires=" + date.toGMTString();
    }
    document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie( name ) {
    var nameSG = name + "=";
    var nuller = '';
   
    if ( document.cookie.indexOf( nameSG ) == -1 )
        return nuller;

    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( nameSG ) == 0 )
            return c.substring( nameSG.length, c.length );
    }
            
    return null;
}

function eraseCookie( name ) {
    newCookie( name, "" , 1 );
}