I agree with Thelma above -- in order to do what you're trying to do, you aren't going to be able to do that with two separate lists.
Either you'll need to do something like what Thelma suggested, or something more like this, where you have the two columns within the li:
<ul class="idTabs1">
<li><span class="left">title</span><span class"right">name</span></li>
</ul>
#idTabs li { overflow:auto; width: 400px; }
#idTabs1 li .left { display:block; float:left; }
#idTabs1 li .right { display:block; float:right; }
Also, if you want spacing between your items -- add padding or margin. Adding <br>s between the elements may cause problems because it's invalid code.