jQuery: How to delete the first <div> child inside an element? Or next previous brother <div>?

[pstein]

Assume I have a html code similar to

<div class="foobar" ....>
   <p>
   <div> first stuff</div>
   <div class="sec"> second stuff </div>
   .....
</div>

1.) How can I delete the first <div> element INSIDE the <div> parent element with class="foobar"?

2.) How can I delete the first <div> brother element BEFORE the <div> element with class="sec"?

If possible suggest a jQuery code. Otherwise JavaScript is acceptable too.

Thank you

Peter

[dsonesuk]

$(".foobar > div").eq(0).remove();

$(".sec").prev().remove();