function updateInfo() { // Save new input info to XML file
    $catTitle = $_POST['catTitle']; // Category title
    $cid = $_POST['catNr']; // Category ID
    $pid = $_POST['prodid']; // Array with product IDs
    $pName = $_POST['prodname']; // Array with product Names
    $pPrice = $_POST['prodprice']; // Array with product Prices
    $deleteProd = $_POST['deleteProduct']; // Array with product IDs for product removal
    $deleteCat = $_POST['deleteCategory']; // If checked - delete category

  /** Manage new info and add it to the XML file **/
    global $xmldoc;
    $category = $xmldoc->getElementsByTagName("products")->item($cid-1); // Get the current category

    if(isset($deleteCat)) { // If user chose to delete the category, delete it
        $category->parentNode->removeChild($category);
        return;
    }

    // Create new elements for the new content
    $newCat = $xmldoc->createElement("products");
    $newTitle = $xmldoc->createElement("title", $catTitle);
        $newCat->appendChild($newTitle);
    print_r($deleteProd);
    $delCount = count($deleteProd) - 1; // Felar inte!
    echo "<br />".count($deleteProd)."<br />".$delCount;
    $k=0; // Increases whenever a product is found and "deleted"
    for($i=0;$i<count($pid);$i++) { // Add all the new product data to the new products element
        if(($deleteProd[$k] == $pid[$i]) || $deleteProd[$delCount] == false) $k++; // If the current product was chosen to be deleted, skip re-creating it
        else {
            $newProd = $xmldoc->createElement("product");
                $newCat->appendChild($newProd);
            $newElem = $xmldoc->createElement("id",$pid[$i]);
                $newProd->appendChild($newElem);
            $newElem = $xmldoc->createElement("name",$pName[$i]);
                $newProd->appendChild($newElem);
            $newElem = $xmldoc->createElement("price",$pPrice[$i]);
                $newProd->appendChild($newElem);
        }
    }
    $category->parentNode->replaceChild($newCat,$category); // Replace the old category info with the new info
    $xmldoc->save('prod.xml'); // Save the file with the new content
}