function validate() {
var mymessage = "Please complete the following field(s): ";
if (!(document.form.Breakout[0].checked || document.form.Breakout[1].checked || document.form.Breakout [2].checked)) {
mymessage = mymessage + "--your breakout session preference ";
}
if (document.form.fname.value=="") {
mymessage = mymessage + "--your first name ";
}
if (document.form.lname.value=="") {
mymessage = mymessage + "--your last name ";
}
if (document.form.library.value=="") {
mymessage = mymessage + "--your library ";
}
if (document.form.institution.options[4].selected) {
mymessage = mymessage + "--your institution ";
}
if (document.form.email.value=="") {
mymessage = mymessage + "--your email address ";
}
if (!(document.form.lunch[0].checked || document.form.lunch[1].checked)) {
mymessage = mymessage + "--your lunch preference ";
}
if (mymessage == "Please complete the following field(s): ") {
document.form.submit();
}
else {
alert(mymessage);
return false;
}
}