['image'] is not an element of the $_FILES array so $fullres == NULL in your script.
Try
$fullres=$_FILES['file1']['name'];
move_uploaded_file (
$_FILES['file1']['tmp_name'],
"../images/fullres/".$fullres)
OR DIE ('Could not copy file');
Now some more general advice - when you have this kind of problem it can be helpful to go back and add some debugging code. For example:
if (isset($_POST['submit'])){
echo 'the form has been submitted';
if (is_uploaded_file($_FILES[file1])){
echo 'there is a file in field 1';
$fullres=$_FILES['file1']['name'];
echo $fullres;
echo $_FILES['file1']['tmp_name']
if (move_uploaded_file(
$_FILES['image']['tmp_name'],
"../images/fullres/".$fullres)) {
echo 'copy successful';
} //end if move_uploaded_file
} //end if is_uploaded_file[file1]
It may seem a little cheesy but it will tell you a lot about what is going on in your script. When everything is working you can either comment it out or delete it.
Also, you ARE going to validate the image type and rename it, right? You're aware of the security risk if you don't?
HTH