if you're a student then you don't get to choose your real name

templates/signup.tpl

@@ -55,7 +55,7 @@
         <div class="row" id="realnamediv">
             <label for="realname">{if $usertype!=2}Real Name{else}Society Name{/if}</label>
             <span class="textinput"><input type="text" id="realname" name="realname" size="30"
-                                           {if $mode=='re-form'}value='{$fields.realname}'{/if}/></span>
+                                           {if $mode=='re-form'}value='{$fields.realname}'{/if} {if $usertype==1}readonly{/if}/></span>
 
             <div id="realnamemessage"{if $mode=='re-form'}{if isset($errors.realname)}
                  style="color:red; float:right; clear:right;">{$errors.realname}{else} style="color:green; float:right;