Pomożecie?

o ile button przeskakuje na "Anuluj" - to nie wraca i poza tym nic sie nie dzieje:
<?php
$countCats = count($catalog);
if ($countCats < 1)
{
echo "Ten klient nie ma dodanego żadnego katalogu.<br>"; echo "<button class=\"btn btn-md text-center btn-submit\" type=\"submit\" name=\"addcat\"><b>Dodaj katalog</b></button>"; }
else
{
for ($i = 0; $i < $countCats; $i++)
{
$lp = $i+1;
<div class=\"row\">
<div class=\"col-sm-1\">
<div class=\"form-group\">
<label>Lp</label>
<input class=\"form-control text-center\" type=\"text\" name=\"lp\" value=\"".$lp."\" disabled />
</div>
</div>
<div class=\"col-sm-4\">
<div class=\"form-group\">
<label>Tytuł katalogu</label>
<input class=\"form-control text-center\" type=\"text\" name=\"newCatalogTitle".$i."\" value=\"".$catalog[$i] -> title."\" required />
</div>
</div>
<div class=\"col-sm-2\">
<div class=\"form-group\">
<label>Plik katalogu</label>
<input class=\"form-control text-center\" type=\"text\" id=\"newCatalogFile".$i."\" name=\"newCatalogFile".$i."\" value=\"".$catalog[$i] -> file."\" required disabled /> </div>
</div>
<div class=\"col-sm-1\">
<div class=\"form-group\">
<label></label>
<button class=\"btn btn-md text-center btn-back\" type=\"button\" id=\"changeCatFile".$i."\" name=\"changeCatFile".$i."\" onclick=\"changeFile();\">Zmień plik</button>
</div>
</div>
</div>
";
<script>
function changeFile(){
$(document).ready(function(){
if ($('#newCatalogFile".$i."').prop('type: text')){
$('#changeCatFile".$i."').html('Zmień plik');
$('#newCatalogFile".$i."').prop('type: text', 'disabled: true');
}
else{
$('#changeCatFile".$i."').html('Anuluj');
$('#newCatalogFile".$i."').prop('type: file', 'disabled: false');
}
});
}
</script>
";
}
}
?>