Pass drop down value use javascript

[eva0212]

Here have an question on passing values using javascript. Below is javascript function. document.all("site_pkid").value; is a drop down list that select data from databse. An the other value is just input text field.I get an Error: document.all("site_pkid") is undefined
while running this use mozilla firefox and cannot be function. But this can function in IE. Then what can i do to solve that can running this code in Mozilla and IE without error?

<select name="site_pkid" onChange="getSite(this.value)">
    <option value="0"></option>    
    <?
$querySite = "SELECT pkid, site_name FROM " . $table['site'] . " WHERE status = 1";
$resultsSite = $database->query($querySite);
while($results_site = $resultsSite->fetchRow()) {    
    
    $querySubStores = "SELECT pkid FROM " . $table['material_types_details'] . " WHERE site_pkid = 
".$results_site['pkid'];
    $resultsSubStores = $database->query($querySubStores);
    $num_subStores = $resultsSubStores->numRows();
    
    if($num_subStores > 0)    {
?>        
        <option value="<?=$results_site['pkid']?>"
<?if($results_site['pkid'] == $location) echo " selected";?>>
<?=$results_site['site_name']?></option>
<?    }}    ?>

function transferTo(theMaterial)
{
    var theSites = document.all("site_pkid").value;
    var theMaxLevel = document.all("max_level").value;
    var theMinLevel = document.all("min_level").value;
    var theStandardPrice = document.all("standard_price").value;
    var theBinNo = document.all("binNo_id").value;    
    var theReorderLevel = document.all("reorder_level").value;
    var theReorderQuantity = document.all("reorder_quantity").value;
    var theLead_time = document.all("lead_time").value;
    var theSubStore = document.all("subStore_id").value;

    
window.location.href='sub_Store.php?pkid=<?=$pkid?>&tab=<?=$tab?>&
site_pkid='+theSites+'&max_level='+theMaxLevel+'&min_level='+theMinLevel+'&
standard_price='+theStandardPrice+'&binNo_id='+theBinNo+'&
reorder_level='+theReorderLevel+'&reorder_quantity='+theReorderQuantity+'&
lead_time='+theLead_time+'&subStore_id='+theSubStore+'&actionPg=add';    
}

Thanks.