cfwindow

have an auction site and when a user clicks to place a bid on view_lots.cfm, a cfform will appear within a cfwindow. when the bid is submitted, the cfwindow disappears and the next page (place_bid_2.cfm) appears. this works fine in firefox but in IE an error message is displayed stating: window.mainWin is null or not an  object.

is there a better way of going about this using cfwindow?

the relevant code is:

view_lots.cfm

<script language="JavaScript1.2" type="text/javascript">
window.name = "mainWin";
</script>

<CFWINDOW
    source="cfwindow_place_bid.cfm?LotID=#LotID#"
    closable="false"
    draggable="true"
    height="195"
    initShow="false"
    name="#Lot_No# - #Lot_Title#"
    resizable="false"
    title=""
    modal="true"
    width="325"
    center="true"
></CFWINDOW>

<a href="javascript:ColdFusion.Window.show('#Lot_No# - #Lot_Title#')"><img src="place_bid.gif" alt="Place Bid" border="0" /></a>

cfwindow_place_bid.cfm

<cfform name="form1" method="post" action="place_bid_2.cfm" target="mainWin" onsubmit="javascript:ColdFusion.Window.hide('#GetLot.Lot_No# - #GetLot.Lot_Title#'); window.mainWin.focus();">
Bid: <cfinput type="text" name="Bid" id="Bid" size="10" required="yes" message="Please Specify Bid" />
<cfinput type="submit" name="Submit" value="Submit!" />

</cfform>