updatepanelanimationextender - resize working

this page i'm having. nonetheless resize biased domain does seem working. i copied many formula . i placed alert() add-on (line 108) value 'b._originalheight' shows adult '44'. i have also attempted formula above-said educational (line 132) work either. (i'm certain where removing value from. nonetheless i need arrangement controls form.

<%@ control language="c#" autoeventwireup="true" codebehind="addeditcontest.ascx.cs" inherits="tmpinternational.spawn2dotcomadmin.contest.usercontrols.addeditcontest" %>
<%@ register assembly="ajaxcontroltoolkit" namespace="ajaxcontroltoolkit" tagprefix="uc" %>
<%@ register assembly="system.web.extensions, version=1.0.61025.0, culture=neutral, publickeytoken=31bf3856ad364e35"
    namespace="system.web.ui" tagprefix="asp" %>
<%@ register tagprefix="ew" assembly="eworld.ui, version=1.9.0.0, culture=neutral, publickeytoken=24d65337282035f2" namespace="eworld.ui" %>
<h1 style="margin-left:8px">add/edit contest</h1>
<asp:scriptmanager id="scriptmanager1" runat="server" enablepartialrendering="true" />

<div style="text-align:left;width:500px; margin-left:8px">
    <div id="panelcontainer">
        <asp:updatepanel id="addeditcontestupdatepanel" runat="server" updatemode="always">
            <contenttemplate>
                <div id="background" style="text-align:left; height: 44px;">
                    <asp:panel id="contestlist" runat="server">
                        <asp:datagrid allowsorting="false" id="contestgrid" gridlines="none" cellpadding="5" 
                            width="100%" autogeneratecolumns="false" alternatingitemstyle-backcolor="#cccccc" 
                            headerstyle-font-size="15px" headerstyle-font-bold="true" headerstyle-backcolor="#888f9b" 
                            runat="server" allowpaging="true" pagesize="10"
                            pagerstyle-nextpagetext="next >>" pagerstyle-prevpagetext="<< back" >
                            <columns>
                                <asp:hyperlinkcolumn datanavigateurlfield="contestid" datanavigateurlformatstring="../?load=addeditcontest&type=edit&contestid={0}" 
                                    datatextfield="title" itemstyle-width="30%" headertext="contest title" />
                                <asp:boundcolumn datafield="startdate" itemstyle-width="35%" headertext="start date" />
                                <asp:boundcolumn datafield="enddate" itemstyle-width="35%" headertext="end date" />
                            </columns>
                        </asp:datagrid>
                        <div style="text-align:right;">
                            <asp:imagebutton id="addcontest" runat="server" 
                                imageurl="~/contest/images/add.png" alternatetext="add contest" 
                                onclick="addcontest_click" />
                        </div>
                    </asp:panel>
                    <asp:panel id="fieldspanel" runat="server">
                        <p /><b>title</b>
                        <br />
                            <asp:textbox runat="server" id="titletext" />
                            <asp:requiredfieldvalidator id="titlevalidator" runat="server" forecolor="red"
                                errormessage="please supplement title" controltovalidate="titletext">*</asp:requiredfieldvalidator>
                        <p /><b>contest description</b>
                            <br />
                            html tags format area. start paragraphs 
                            &lt;p /&gt; tag, confidant equipment &lt;b&gt;&lt;/b&gt; tags. emanate 
                            line-break between lines &lt;br /&gt; tag.<br />
                            <asp:textbox runat="server" id="descriptiontext" textmode="multiline" width="400" height="200" />
                            <asp:requiredfieldvalidator id="descriptionvalidator" runat="server" errormessage="please supplement description" 
                                controltovalidate="descriptiontext" forecolor="red">*</asp:requiredfieldvalidator>
                        <p />
                            <b>contest start date</b>
                        <br />
                        <ew:calendarpopup id="startdate" runat="server" text="change date" width="75px" monthyeararrowimageurl="~/images/monthchange.gif"
                            calendarlocation="left" controldisplay="textboximage" imageurl="~/images/calendar.gif" monthyearpopupapplytext="select"
                            calendarwidth="150" useexternalresource="true" externalresourcepath="~/scripts/calendarpopup.js" nullable="false">
                            <weekdaystyle font-names="arial" forecolor="black" backcolor="white" font-size="9pt" />
                            <monthheaderstyle font-size="9pt" font-names="arial" font-bold="true" forecolor="white" backcolor="#669ac1" />
                            <offmonthstyle forecolor="gray" backcolor="white" font-size="9pt" />
                            <gototodaystyle font-names="arial" forecolor="black" backcolor="white"/>
                            <todaydaystyle font-bold="true" forecolor="#669ac1" backcolor="white" />
                            <dayheaderstyle font-size="9pt" font-names="arial" font-bold="true" forecolor="blue" backcolor="white" />
                            <weekendstyle font-names="arial" forecolor="blue" backcolor="lightgray" font-size="9pt" />
                            <selecteddatestyle font-bold="true" forecolor="white" backcolor="#669ac1" font-size="9pt"/>
                            <holidaystyle font-names="arial" forecolor="black" backcolor="white" />
                        </ew:calendarpopup>
                        &nbsp;
                        <ew:timepicker id="starttime" runat="server" controldisplay="textboximage" text="change time" 
                                imageurl="~/images/clock.gif" numberofcolumns="4" scrollable="true" width="75px">
                            <timestyle forecolor="blue" backcolor="white" font-size="9pt" />
                            <selectedtimestyle forecolor="blue" backcolor="gray" />
                        </ew:timepicker>
                        <p/><b>contest finish date</b>
                        <br />
                        <ew:calendarpopup id="enddate" runat="server" text="change date" width="75px" monthyeararrowimageurl="~/images/monthchange.gif"
                            calendarlocation="left" controldisplay="textboximage" imageurl="~/images/calendar.gif" monthyearpopupapplytext="select"
                            calendarwidth="150" useexternalresource="true" externalresourcepath="~/scripts/calendarpopup.js" nullable="false">
                            <weekdaystyle font-names="arial" forecolor="black" backcolor="white" font-size="9pt" />
                            <monthheaderstyle font-size="9pt" font-names="arial" font-bold="true" forecolor="white" backcolor="#669ac1" />
                            <offmonthstyle forecolor="gray" backcolor="white" font-size="9pt" />
                            <gototodaystyle font-names="arial" forecolor="black" backcolor="white"/>
                            <todaydaystyle font-bold="true" forecolor="#669ac1" backcolor="white" />
                            <dayheaderstyle font-size="9pt" font-names="arial" font-bold="true" forecolor="blue" backcolor="white" />
                            <weekendstyle font-names="arial" forecolor="blue" backcolor="lightgray" font-size="9pt" />
                            <selecteddatestyle font-bold="true" forecolor="white" backcolor="#669ac1" font-size="9pt"/>
                            <holidaystyle font-names="arial" forecolor="black" backcolor="white" />
                        </ew:calendarpopup>
                        &nbsp;
                        <ew:timepicker id="endtime" runat="server" controldisplay="textboximage" text="change time" 
                                imageurl="~/images/clock.gif" numberofcolumns="4" scrollable="true" width="75px">
                            <timestyle forecolor="blue" backcolor="white" font-size="9pt" />
                            <selectedtimestyle forecolor="blue" backcolor="gray" />
                        </ew:timepicker>
                    <p />
                        <asp:imagebutton id="savecontestbutton" runat="server" alternatetext="confirm" 
                        imageurl="~/contest/images/confirm.png" onclick="savecontestbutton_click" />
                </asp:panel>
                <br />
                <asp:label id="messagelabel" runat="server" />
                </div>
            </contenttemplate>
            <triggers>
                <asp:asyncpostbacktrigger controlid="savecontestbutton" eventname="click" />
            </triggers>
        </asp:updatepanel>
    </div>
    <uc:updatepanelanimationextender id="upae" behaviorid="animation" runat="server" targetcontrolid="addeditcontestupdatepanel">
        <animations>
            <onupdating>
                <sequence>
                    <%-- store uncanny tallness quarrel --%>
                    <scriptaction script="var b = $find('animation'); b._originalheight = b._element.offsetheight;" />

                    <%-- invalidate controls --%>
                    <parallel duration="0">
                        <enableaction animationtarget="savedefaultdescriptionbutton" enabled="false" />
                    </parallel>
                    <styleaction attribute=" " value="hidden" />

                    <%-- any comparison effects --%>
                    <parallel duration=".25" fps="30">
                        <fadeout animationtarget="panelcontainer" minimumopacity=".2" />
                        <resize height="0px" />
                    </parallel>
                </sequence>
            </onupdating>
            <onupdated>
                <sequence>
                    <%-- any comparison effects --%>
                    <parallel duration=".25" fps="30">
                        <fadein animationtarget="panelcontainer" minimumopacity=".2" />
                        <length duration="2" fps="40" property="style"  propertykey="height" 
                            startvalue="10"  endvaluescript="$get('animation').offsetheight" 
                            animationtarget="animation" />
                        <%--also attempted below
                        <resize heightscript="$find('animation')._originalheight" />
                        --%>
                    </parallel>

                    <%-- assent controls --%>
                    <parallel duration="0">
                        <enableaction animationtarget="savedefaultdescriptionbutton" enabled="true" />
                    </parallel>                            
                </sequence>
            </onupdated>
        </animations>
    </uc:updatepanelanimationextender>
</div>