innerHTML not working in FIREFOX

[omerbutt]

hi there i have a registration page on which i have a captcha verification method i customized that code for the sake that the user is able to refresh the captcha images by staying on the same page via AJAX ,now the code i have written works perfect in IE6 , the user clicks the Refresh button and the new images is populated but when using FIREFOX it is doing nothing, i have placed the Captcha Image inside a div and on getting response(the new image) i throw that text inside the div via innerHTML but i is not replacing the image in FIREFOX ALTHOUGH THERE IS NO ERROR IN THE JAVASCRIPT AND THE FIRBUG SHOWS THE RESPONSED IMAGE TAG i tried to replace the image src also rather than overwriting the innerHTML of the div by splitting the response but still no use for that
i have to upoload that site today i am in a mess really the cross browser issues making me sick :s the code is here
filename=resistration.php

 <script type="text/javascript" language="javascript">
function ref_captcha(){
    refCapObj=GetXmlHttpObject();
    var url="img_refresh.php";
    if(refCapObj==null){
        alert("you need to upgrade your browser");
        return;
    }else{
        refCapObj.onreadystatechange=st_captcha;
        refCapObj.open("GET",url,true);
        refCapObj.send(null);
    }
}
function st_captcha(){
    if(refCapObj.readyState==4){
        if(refCapObj.status==200){
            document.getElementById("captcha_img").innerHTML=refCapObj.responseText;
        }
    }
}
</script>
 

<tr>
 <td align="left" valign="middle">
<div id="captcha_img">
<img src="captcha/captcha.php?.jpg" alt="If Image is not showing, refresh this page" />
</div>
</td>
<td align="center" valign="bottom" width="200" class="text_grey_12">
<div id="ref_captcha" style="cursor:pointer;" onmouseover="ld_img();" onmouseout="unld_img();" onclick="ref_captcha();">
<div id="ref_img"></div>Refresh Image</div>
</td>
</tr>
 

filename="img_refresh.php"

<?
    echo "<img src='captcha/captcha.php?.jpg' alt='If Image is not showing, refresh this page' />";
?>
 

[acoder]

Check captcha.php?.jpg Does it show what you expect?

[omerbutt]

Check captcha.php?.jpg Does it show what you expect?

yes acoder actually i have misinterpreted a lil thing and hat was , that i was getting the reponse and the images was generated also but it was generating the same image that was being generated previously and it looked like that the innerHTML was not working and not replacing the image but it is some other case it isnot generatingthe new captcha string :(

[acoder]

But you're saying it works in IE6?

[omerbutt]

But you're saying it works in IE6?

yes exacly :( if the way i have done it , if it isnt generating a new string and not updating/overwriting the session variable then how come it is updating in IE6 :S

[acoder]

You may need to ask in the PHP forum for the problem in your PHP code.

Usually IE has a problem with caching GET requests. Perhaps you could try adding a unique parameter to the end of the URL and see if that helps.

PS. you should really be testing in a more standards-compliant browser first to make cross-browser coding easier for yourself.

[omerbutt]

You may need to ask in the PHP forum for the problem in your PHP code.

Usually IE has a problem with caching GET requests. Perhaps you could try adding a unique parameter to the end of the URL and see if that helps.

PS. you should really be testing in a more standards-compliant browser first to make cross-browser coding easier for yourself.

k i check that acoder thanks for the reply ,
regards,
omer