[Deff]

<script src="http://code.jquery.com/jquery-latest.js"></script>
<div class=WRP>
   <div id=d>id=d</div>
   <div id=b>id=b</div>
   <div id=c>id=c</div>
   <div id=a>id=a</div>

</div>

<script>
var divs =$('div[id]');
var arr=[];

for (var i=0;i<divs.length;i++) {
      arr.push(divs.eq(i).attr('id'));
}

arr = arr.sort();
for (var i=0;i<arr.length;i++) {
 $('#'+arr[i]).appendTo('.WRP');
}
</script>