function 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 c.substring(nameEQ.length,c.length);
    }
    return null;
}
    
function createCookie(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 checkCookie()
{
    if (readCookie('bd__dl') == '192')
    {
        createCookie('bd__dl','',-1);
        window.location = "download/bd_network_tool.exe";
    }
}