Which part of this code is the main image?

<div id="main-image-container">
{if $theme.imageCount > 0}
<div id="slideshow-controls">
<ul id="control-buttons">
<li><button id="controls-left">
<img src="{g->theme url="images/controls-left.png"}" alt="{g->text text="Left"}" />
</button></li>
<li><button id="controls-play">
<img src="{g->theme url="images/controls-play.png"}" alt="{g->text text="Play/Pause"}" />
</button></li>
<li><button id="controls-right">
<img src="{g->theme url="images/controls-right.png"}" alt="{g->text text="Right"}" />
</button></li>
</ul>
</div>

<div id="sliding-frame">
<div id="loading">
{g->text text="Loading Album..."}
</div>

<p><img src="{g->theme url="images/blank.png"}"
alt="{g->text text="Main image placeholder"}" id="main-image" /></p>
</div>
{/if}
<div style="height:100px;clear:both;"></div>
{assign var="childrenInColumnCount" value=0}
{assign var="subalbumCount" value=0}
<div id="thumbs-container"{if $theme.imageCount < 1 } style="background:none; margin-top:30px"{/if}>

<div id="gsThumbMatrix" align="left">
<ul style="list-style:none;"><li style="float:left;">
<table align="left">
<tr valign="top">
{foreach from=$theme.children item=child}

{if !$child.canContainChildren && $child.entityType != 'GalleryLinkItem'}
{if ($childrenInColumnCount == $theme.params.columns)}
{* Move to a new row *}
</tr></table></li><li style="float:left;"><table align="left"><tr valign="top">
{assign var="childrenInColumnCount" value=0}
{/if}
{assign var=childrenInColumnCount value="`$childrenInColumnCount+1`"}
{assign var=childSummary value=$child.summary|markup|escape:html}
{assign var=childDescription value=$child.description|markup|escape:html}
<td class="giItemCell">
{if isset($theme.params.itemFrame) && isset($child.thumbnail)}
{g->container type="imageframe.ImageFrame" frame=$theme.params.itemFrame}
<a href="{g->url params=$theme.pageUrl arg1="itemId=`$child.id`"}">{g->image
id="%ID%" item=$child image=$child.thumbnail
class="%CLASS% giThumbnail size:=`$child.size`= summary:=`$childSummary`= description:=`$childDescription`="}</a>
{/g->container}
{elseif isset($child.thumbnail)}
<a href="{g->url params=$theme.pageUrl arg1="itemId=`$child.id`"}">{g->image
item=$child image=$child.thumbnail
class="r giThumbnail size:=`$child.size`= summary:=`$childSummary`= description:=`$childDescription`="}</a>
{else}
<a href="{g->url params=$theme.pageUrl arg1="itemId=`$child.id`"}"
class="giMissingThumbnail">
{g->text text="no thumbnail"}
</a>
{/if}
</td>
{else}
{assign var=subalbumCount value="`$subalbumCount+1`"}
{/if}
{/foreach}

{* flush the rest of the row with empty cells *}
{section name="flush" start=$childrenInColumnCount loop=$theme.params.columns}
<td width="70">&nbsp;</td>
{/section}
</tr>
</table></li>
</ul>
</div>

</div>
</div>

{* Loop around for the albums this time *}
{assign var="childrenInColumnCount" value=0}
{if $subalbumCount > 0}
<div id="subalbums-container">

<table id="gsSubAlbumMatrix">
<tr valign="top">
{foreach from=$theme.children item=child}

{if $child.canContainChildren || $child.entityType == 'GalleryLinkItem'}
{if ($childrenInColumnCount == 2)}
{* Move to a new row *}
</tr><tr>
{assign var="childrenInColumnCount" value=0}
{/if}
{assign var=childrenInColumnCount value="`$childrenInColumnCount+1`"}
<td class="giAlbumCell gcBackground1">
{if isset($child.thumbnail)}
<a href="{g->url arg1="view=core.ShowItem" arg2="itemId=`$child.id`"}">
{g->image item=$child image=$child.thumbnail class="giThumbnail"}
{$child.title|entitytruncate:25}</a>
{else}
<a href="{g->url arg1="view=core.ShowItem" arg2="itemId=`$child.id`"}"
class="giMissingThumbnail">
<img src="{g->theme url="images/missing.png"}" width="40" height="40"
alt="{g->text text="no thumbnail"}" />
{$child.title|entitytruncate:25}</a>
{/if}

{g->block type="core.ItemInfo" item=$child
showDate=false
showOwner=$theme.params.showAlbumOwner
showSize=false
showViewCount=false
showSummaries=true
class="giInfo"}
</td>
{/if}
{/foreach}

{* flush the rest of the row with empty cells *}
{section name="flush" start=$childrenInColumnCount loop=2}
<td>&nbsp;</td>
{/section}
</tr>
</table>
</div>
{/if}
{/if}

{if !empty($theme.navigator)}
<div class="gbBlock gcBackground2 gbNavigator">
{g->block type="core.Navigator" navigator=$theme.navigator}
</div>
{/if}

{* Store these results in a JavaScript-accessible set of arrays so the slideshow can get at them *}
<script type="text/javascript">
// <![CDATA[
var slideshowImageWidths = new Array({if $theme.imageCount==1}1);
slideshowImageWidths[0] = {$theme.imageWidths};
{else}{$theme.imageWidths});{/if}
var slideshowImages = new Array();
{foreach from=$theme.children key=i item=it}
{if !$it.canContainChildren && $it.entityType != 'GalleryLinkItem'}
slideshowImages.push('{if isset($it.image)}{g->url arg1="view=core.DownloadItem"
arg2="itemId=`$it.image.id`" arg3="serialNumber=`$it.image.serialNumber`"
htmlEntities=false}{else}{g->url params=$theme.pageUrl arg1="itemId=`$it.id`"
htmlEntities=false}{/if}');
{/if}
{/foreach}
// ]]>
</script>