[Justin Murad]

Works with 3.7.x, I've just tried.
And I've done something. I combined Imageshack and Rapidshare plugins in a fieldset. Look at the ss in the attachment. If u like it, copy the codes and change it with the original one.

<SCRIPT LANGUAGE='JAVASCRIPT' TYPE='TEXT/JAVASCRIPT'>
 <!--
var win=null;
function NewWindow(mypage,myname,w,h,pos,infocus){
if(pos=="random"){myleft=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;mytop=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){myleft=(screen.width)?(screen.width-w)/2:100;mytop=(screen.height)?(screen.height-h)/2:100;}
else if((pos!='center' && pos!="random") || pos==null){myleft=0;mytop=20}
settings="width=" + w + ",height=" + h + ",top=" + mytop + ",left=" + myleft + ",scrollbars=yes,location=no,directories=no,status=no,menubar=no,toolbar=no,resiz  able=yes";win=window.open(mypage,myname,settings);
win.focus();}
// -->
</script>

<fieldset class="fieldset"><legend>Image and File Upload</legend> <div style="padding:$stylevar[formspacer]px"> 

<a href="javascript:NewWindow('imageshack.php','imageshack','600','150','center','front');">
<img src="images/imageshack.gif"  border="0"></a>&nbsp&nbsp <!--Rapidshare-->
<SCRIPT LANGUAGE='JAVASCRIPT' TYPE='TEXT/JAVASCRIPT'>
 <!--
var win=null;
function NewWindow(mypage,myname,w,h,pos,infocus){
if(pos=="random"){myleft=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;mytop=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){myleft=(screen.width)?(screen.width-w)/2:100;mytop=(screen.height)?(screen.height-h)/2:100;}
else if((pos!='center' && pos!="random") || pos==null){myleft=0;mytop=20}
settings="width=" + w + ",height=" + h + ",top=" + mytop + ",left=" + myleft + ",scrollbars=yes,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes";win=window.open(mypage,myname,settings);
win.focus();}
// -->
</script>

<a href="javascript:NewWindow('rapid.php','rapid','600','150','center','front');">
<img src="images/rapid.gif"  border="0"></a>
<!--Rapidshare finished--></div></fieldset>