[Ayuda] Javascript!

[Algrox]

Me podrian ayudar? en que estoy mal?

index.php

Código:

<script language="javascript" type="text/javascript">
<!--
function rediPage() {
var mensaje = rediPage;
}

function startUpload(){
      document.getElementById('f1_upload_process').style.visibility = 'visible';
      document.getElementById('f1_upload_form').style.visibility = 'hidden';
      return true;
}

function stopUpload(success){
      var result = '';
      if (success == 1){
         result = '<span class="msg">Tu imagen se cargo correctamente!</span><br/><span class="msg"><a href="' +mensaje +'" target="_blank">Ver imagen</span><br/>';
      }
      else {
         result = '<span class="emsg">Ocurrio un error al cargar tu archivo!</span><br/><br/>';
      }
	  
      document.getElementById('f1_upload_process').style.visibility = 'hidden';
      document.getElementById('f1_upload_form').innerHTML = result + '<label>File: <input name="myfile" type="file" size="30" /></label><label><input type="submit" name="submitBtn" class="sbtn" value="Upload" /></label>';
      document.getElementById('f1_upload_form').style.visibility = 'visible';      
      return true;   
}
//-->
</script>

upload.php

Código:

<?php
$result = 1;
?>
<script language="javascript" type="text/javascript">
window.top.window.stopUpload(<?php echo $result; ?>);
window.top.window.rediPage = ('http://sitioweb.com/<?php echo $identificador; ?>');
</script>

Saludos y gracias :)