var urlAgreements = "/allmana-vilkar.asp";

function popupAgreement() 
{
    window.open(urlAgreements, "agreement", "left=" + screen.width / 4 + ",top=" + screen.height / 4 + ",toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width=640,height=480");
}