You try to following this guide:
1) you access the template configuration and click to the Layout Tab and find the follow code
<block name=”top-panel” type=”modules” style=”jaraw” main-inner=”1″>top-panel</block>
replace by:
<block name=”top-ads” type=”modules” style=”jaraw” main-inner=”1″>top-ads</block>
<block name=”top-panel” type=”modules” style=”jaraw” main-inner=”1″>top-panel</block>
When done, your template has a new position , its name is “top-ads”, you will put the banner on this position
2) you add the following code into the template.css file
#ja-header {
margin-top: 30px!important;
}
#ja-topbar {
top: 82px!important;
}