I am trying to externalize the style element of a tabstrip in style.css file.

<eo:tabstrip id="tabStrip" runat="server" controlskinid="None" multipageid="MultiPage" >
<TopGroup Style-CssClass="tabStripDeal1" Style-CssText="" Width="100"><Items>
<eo:TabItem ItemID="tabFindDeals"></eo:TabItem>
<eo:TabItem ItemID="tabDealDetails"></eo:TabItem>
</Items>
</TopGroup>
<LookItems>
<eo:TabItem Image-BackgroundRepeat="RepeatX" Image-Mode="TextBackground" Image-SelectedUrl="00010205"
Image-Url="00010202" ItemID="_Default" LeftIcon-SelectedUrl="00010204" LeftIcon-Url="00010201"
RightIcon-SelectedUrl="00010206" RightIcon-Url="00010203">
<SubGroup OverlapDepth="8" Style-CssClass="tabStripDeal1">
</SubGroup>
</eo:TabItem>
</LookItems>
<DesignOptions BackColor="239, 235, 222" />

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In External CSS file, I have the following:

.tabStripDeal1
{
background-image:url('00010200');
background-repeat:repeat-x;
cursor:pointer;
cursor:hand;
font-family:tahoma;
font-size:9pt
}

But the background-image is missing from the the webpage when I visit the page in the browser.

Please let me know how to enrich the background-image:url('00010200') attribute to find the stock item in the eo package.

Thanks