// <SCRIPT language="javascript">
 function calcit()
 {
    var tot =0;
    var dscnt =0 ;

    var win = window.document.forms[0];
    if (win.Membership_Duration.value == '1') {
        dscnt = 1; 
    }
        else {
            if (win.Membership_Duration.value == '2') { 
                dscnt = 0.95;
            } 
                else {
                    if (win.Membership_Duration.value ==  '3') { 
                        dscnt = 0.85;
                     } 
                }
         }

    tot = Number(win.Membership_Level.value) + Number((win.Additional_Users.value * 100));
    tot = tot * Number(win.memDuration.value) * dscnt;
    tot = tot.toFixed(2);
    win.mCost.value = tot;
}
function checkButton()
{
    if (window.document.forms[0].Checkbox1.checked==true) {
        window.document.forms[0].ctl00_main_content1_cmdAddUser.disabled=false;
    }
        else {
            window.document.forms[0].ctl00_main_content1_cmdAddUser.disabled=true;
        }
}

 // </Script>