function formCheck() {
    var agree = document.getElementById('agree');
    if (agree.checked == true) {
        return true;
    } else {
        alert('You should agree to the terms of service to proceed !');
        return false;
    }
}

function popjack()
 { window.open('http://www.crocmint.com/termsofservice.htm','popjack','toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,copyhistory=no,scrollbars=yes,width=640,height=265');
 }