// gets the site name from the web address
function getSiteParam(location)
{
    // get location string
    var str_location = " " + location;
    
    // get all params
    var paramIndex = str_location.indexOf("?");
    if (paramIndex == -1)
        return "";
    var substrParams = str_location.substring(paramIndex + "?".length);
    
    // get site param and all after
    var siteIndex = substrParams.indexOf("site=");
    if (siteIndex == -1)
        return "";
    var siteParams = substrParams.substring(siteIndex + "site=".length);
    
    // more than 1 param?
    var andIndex = siteParams.indexOf("&");
    if (andIndex != -1)
        siteParams = siteParams.substring(0, andIndex);
    
    return siteParams;
}

// arithmetic round function
function round(value, decimals)
{
  return Number(Math.round(value+'e'+decimals)+'e-'+decimals);
}