<form action="update.php?KBID=<?=$KBID ?>&offset=<?=$offset ?>&Action=Update&tabName=<?=$secondtabs_param; ?>" method="post" enctype="multipart/form-data" name="form2" id="form2" onSubmit="escFileValues()">
Attachments:<input type="file" id="zipfile" name="zipfile" multiple>
</form>

function escFileValues(){
    escFileValue('zipfile','zipfilename');
}
function escFileValue(fileElementId,carrierElementId){
    var element = document.getElementById(fileElementId);
    if(element.value != '' && element.value != null){
        var string = element.value;
        var array = string.split(/\|//);
        string = escape(array[array.length - 1]);
        element = document.getElementById(carrierElementId);
        element.value = string;
    }
}

if(getPostPutField('zipfilename',$zipfilename))
$zipfilename = urldecode($zipfilename);
$uploaded = handleUploadedZipFile($KBID, $_FILES['zipfile'], $zipfilename);
if ($uploaded) {
$changesForEveryone[] = "Zip File Uploaded: " . $zipfilename;
$extraMsg .= "<br>Zip File Uploaded: " . $zipfilename."<br>";
}

function handleUploadedZipFile($KBID, $file, $zipfilename=null){
$result = '';
if(empty($zipfilename))
$zipfilename = $file['name'];
if ($file['size'] > 0)
{
$dir = PROBLEMZIPS."/".sprintf("%05d",$KBID)."/";
$result = getUploadedFile($file['tmp_name'],$dir,$zipfilename);
}
else
{
$result = false;
}
return $result;
}