Refactored, no more redirects. Improved error messaging system

tpl/assignnodetoasset.tpl

@@ -1,5 +1,4 @@
-<form method="POST" action="submit.php">
-<input type="hidden" name="add" value="assignnodetoasset">
+<form method="POST" action="node.php">
 
 <table class="title">
     <tr>
@@ -8,7 +7,7 @@
         </td>
         <td align="right">
             <a href="#" onClick="history.go(-1)"><img src="image.php?icon=back" alt="{$lang_cancel}"></a>
-            <input type="image" src="image.php?icon=save" alt="{$lang_submit}">
+            <input type="image" name="submit[exec-link]" src="image.php?icon=save" alt="{$lang_submit}">
         </td>
     </tr>
 </table>