Como por o marcador em forma de menu

Va em EDITAR HTML>EXPANDIR MODELO> E PROCURE POR:

Agora se a sua coluna é a esquerda procure por:


<b:section-contents id='sidebar-left-1'> 

Se a sua coluna fica a direita procure por:


<b:section-contents id='sidebar-right-1'>  



E coloque este código abaixo, depois do código citado acima. Salve e prontinho.


<b:widget id='Label14' locked='false' title='Marcadores expandivel com imagem' type='Label'>
<b:includable id='main'>
<b:if cond='data:title'>
<h2><data:title/></h2>
</b:if>
<div class='widget-content'>
<ul>
<script type='text/javascript'>
// <![CDATA[
home_page = 'ENDEREÇO DE SEU BLOG AQUI';
max_rc_posts = 2000;
function showentry(json){
var maxp = (max_rc_posts <= json.feed.entry.length) ? max_rc_posts : json.feed.entry.length;
var text = "<ul>";
for (var i = 0; i < maxp; i++) {
var entry = json.feed.entry[i];
var posttitle = entry.title.$t;
var posturl;
if (i == json.feed.entry.length) break;
for (var k = 0; k < entry.link.length; k++) {
if (entry.link[k].rel == 'alternate') {
posturl = entry.link[k].href;
break;
}
}
text += "<li><img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiVhJGs1Do32kThNxDL2qJc5Y3kl-cLSm7FBFi_aJCric21CSBUkjn0AuB2_GZsAusF_SnrPnCdJCuvG6yiMRRNIYpkVr3YBZSBq87a9zOTDW7en7mXyFTM9hlX0bxChYvjpCiBjqHDHgyQ/s320/folder_open_16x16.gif'/><a href='"+posturl+"'>" + posttitle + "</a></li>";
}
text += "</ul>";
document.getElementById("showItemLabel").innerHTML = text;
}
function showPostLabel(sPL_label,e){
var isDOM = (navigator.appName.match("Microsoft Internet Explorer") || navigator.appName.match("MSIE")) ? false : true;
var check = document.getElementById("showItemLabel");
if(check) {
if(!isDOM) { check.removeNode(true); }
else {check.parentNode.removeChild(check);}
}
var elm;
if(e.target) elm = e.target;
else elm = window.event.srcElement;
var div = document.createElement('div');
div.innerHTML = "";
div.id = "showItemLabel";
if(!isDOM) { elm.insertAdjacentElement('afterEnd', div); } else { elm.parentNode.insertBefore(div, this.nextSibling); }
var elm2 = document.getElementById("showItemLabel");
elm2.style.display = "inline";
elm2.innerHTML = "<br/><img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNN_9MCt9B1MolIIdpeku8oa0rwaxLaJahdh2S_zVdiJA5iYvDF8fYSXxaChSQIIzAHqUAvc9y92wbCrn0vtydvH_cVLg65PEZK9b4ADl1DJUspWemleOW3y_1Fo57yXBI2avLsZ8ES94/s1600/ev865e.gif'/>";
var script = document.createElement('script');
script.src = home_page+"feeds/posts/summary/-/"+sPL_label.replace(/ /g,"%20")+"?start-index=1&max-results="+max_rc_posts+1+"&alt=json-in-script&callback=showentry";
script.type = "text/javascript";
document.getElementsByTagName('head')[0].appendChild(script);
}
// ]]>
</script>
<ul>
<b:loop values='data:labels' var='label'>
<li>
<b:if cond='data:blog.url == data:label.url'>
<span expr:dir='data:blog.languageDirection'>
<data:label.name/> <span dir='ltr'/> <a expr:onMouseOver='&quot;showPostLabel(\&quot;&quot; + data:label.name + &quot;\&quot;,event)&quot;' href='javascript:void(0)'>&#9660;</a>
</span>
<b:else/>
<a expr:dir='data:blog.languageDirection' expr:href='data:label.url'><img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPDSMs5GbGl24qKTFp6GNvxKaJJOl4M2KUrrYeh0VpLsZnULUqSbyXj3uDlC9pWSKJEQLqJ4d73RgDRZiUa8ArYGM2Xzud2dbeTtQjgwwgSs1u7n7xaU1uO99_9vCIvARYzgBUiGM4aq0/s1600/folder_%2528add%2529_16x16.gif'/> <data:label.name/></a>
<a expr:onMouseOver='&quot;showPostLabel(\&quot;&quot; + data:label.name + &quot;\&quot;,event)&quot;' href='javascript:void(0)'>&#9660;</a>
</b:if>
</li>
</b:loop>
</ul>

</ul>
<b:include name='quickedit'/>
</div>
</b:includable>
</b:widget>