help! object error with onchange()

[jnm]

hi, i am frustrated with this error. the script works fine if i don't loop php for the links i need, but i kinda need to use the php loop.

The error line is in bold red when i try to execute it (click on the link).

in the head:

<script type="text/javascript">

/***********************************************
* Dynamic Ajax Content- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

var bustcachevar=1 //bust potential caching of external pages after initial request? (1=yes, 0=no)
var loadedobjects=""
var rootdomain="http://"+window.location.hostname
var bustcacheparameter=""

function ajaxpage(url, containerid){
var page_request = false
if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
} 
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
if (bustcachevar) //if bust caching of external page
bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
page_request.open('GET', url+bustcacheparameter, true)
page_request.send(null)
}

function loadpage(page_request, containerid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(containerid).innerHTML=page_request.responseText
}

function loadobjs(){
if (!document.getElementById)
return
for (i=0; i<arguments.length; i++){
var file=arguments[i]
var fileref=""
if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
if (file.indexOf(".js")!=-1){ //If object is a js file
fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src", file);
}
else if (file.indexOf(".css")!=-1){ //If object is a css file
fileref=document.createElement("link")
fileref.setAttribute("rel", "stylesheet");
fileref.setAttribute("type", "text/css");
fileref.setAttribute("href", file);
}
}
if (fileref!=""){
document.getElementsByTagName("head").item(0).appendChild(fileref)
loadedobjects+=file+" " //Remember this object as being already added to page
}
}
}

</script>

in the body:

<form>
<select id="ajaxmenu" size="4" onChange="ajaxcombo('ajaxmenu', 'contentarea')">
<option value="">Select A file to load</option>
<?
include("db_connection.php");
$sql = mysql_query("SELECT sp_id, sp_company FROM companies WHERE sp_accepted = 'Y'") or die(mysql_error());
	while ($row = mysql_fetch_array($sql)) {
		$spid = $row['sp_id'];
		$spcompany = $row['sp_company'];
		echo "<option value=\"getpage.php?sid=$spid\">$spcompany</option>\n";
	}
?>
</select>
</form>
<div id="contentarea"></div>

any thoughts on generating the options for the select with php would cause this error? whitespace?

thanks.

[raimund]

What error do you get?
Where is the function ajaxcombo?