[SOLVED] textarea not disabling? no responding text....

[MikeDXUNL]

alright. this forum is to create a Category or Forum. The user selects Category or Forum from a drop-down list and then if it is equal to 'Category' the Forum Description textarea will disable... if it is equal to 'Forum'. then it is enabled.

 

 

if there is an easier way of pulling this off, i would be thankful but here is the coding.

 

 

 

 

 

 

createforum.php

	<form action="createforum.php" method="post">
	<table width="50%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="25%" valign="top"><strong>Forum Type:</strong></td>
<td width="75%">
<select name="forumtype" onchange="forumtype(this.value)">
<option value="no">----------------------</option>
<option value="Category">Category</option>
<option value="Forum">Forum</option>
</select>
<div id="txtHint"> </div>
</td>
</tr>


<tr>
<td valign="top"><strong>Forum Description:</strong></td>
<td valign="top">
<textarea id="forumdesc" name="forumdesc" cols="30" rows="10"></textarea>
</td>
</tr>

</table>
<input type="submit" value="Submit" />
	</form>

 

 

 

 

js/forumtype.js

var xmlHttp

function forumtype(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="ajax/forumtype.php";
url=url+"?ftype="+str;
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}


function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{ 
document.getElementById("txtHint").innerHTML=xmlHttp.responseText;

if (xmlHttp.responseText == ' ')
        document.getElementById("forumdesc").disabled = true;
    else
         document.getElementById("forumdesc").disabled = false;   
}
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}

 

 

 

 

ajax/forumtype.php

<?php


if ($_GET['ftype'] == "Category") {
echo "";
} elseif($_GET['ftype'] == "Forum") {
echo "hello world";
}



?>