Problem getting function to return false

[FunkHouse9]

I have 2 functions, the first one, "GetSelectedItem" is determining which radio button was selected and running the "formvalidation" function if needed. This is working fine. My problem is getting the entire form to return false if "formvalidation" is false. I can't figure out how to have "GetSelectedItem" return false if "formvalidation" is false. I've tried a bunch of methods I've found, but I keep getting it wrong.

Any help would be greatly appreciated! Here is what I have:


<script language="JavaScript" type="text/JavaScript"><!--

function GetSelectedItem() {
chosen = ""
len = document.form.item_LabelShip.length
for (i = 0; i <len; i++) {
if (document.form.item_LabelShip[i].checked) {
chosen = document.form.item_LabelShip[i].id
}
}
if (chosen == "ExpressShip") {formvalidation(this)}
}



function formvalidation()
{
with (document.form.ShipperAcctNumber)
{
if (value == null || value == "")
{alert("For overnight FedEx/DHL shipping, you must enter an account number.");return false}
else {return true}
}
}


//--></script><form name="form" onsubmit="return GetSelectedItem()" action="http://www.cartserver.com/sc/cart.cgi" method="post">

[iam_clint]

if (chosen == "ExpressShip") {formvalidation(this)}

if (chosen == "ExpressShip") { return formvalidation(this); }

[FunkHouse9]

Clint, you are my new hero!!! Thank you!