[jQuery] select all grandchildren of a div

[jQuery] select all grandchildren of a div


Hey All,
I have to select all my grandchildren of parent div. only the
grandchildren not either of children or great grandchildren.
<div id="parent" class="parent" >
<div id="child" class="child">
<div id="grand_child_1" class="grandchild" > </div>
<div id="great_grand_child_1"
class="greatgrandchild" > </div>
<div id="great_grand_child_2"
class="greatgrandchild" > </div>
.
.
.
<div id="great_grand_child_n"
class="greatgrandchild" > </div>
<div id="grand_child_2" class="grandchild" > </
div>
<div id="great_grand_child_1"
class="greatgrandchild" > </div>
<div id="great_grand_child_2"
class="greatgrandchild" > </div>
.
.
.
<div id="great_grand_child_n"
class="greatgrandchild" > </div>
<div id="grand_child_3" class="grandchild" > </div>
.
.
.
.
<div id="grand_child_n" class="grandchild"> </div>
</div>
</div>
How can i achieve this using jquery?
Thanks in advance....
regards,
krish