Issue with ajax script

[Athgar]

I have an ajax file which I did not write myself which has the following function :

 

http_request.onreadystatechange = function()
{	
	if(http_request.readyState < 4)
	{
		loadElement.innerHTML = '<img src="/images/ajax-loader.gif" alt="Loading" /> Requesting information...';
	} else if(http_request.readyState == 4){

		if(http_request.status == 200)
		{	
			outputElement.innerHTML = http_request.responseText;
		} else {
			outputElement.innerHTML = 'There was a problem with the request.';
		}
	}
}

 

The output of this code is always 'There was a problem with the request' when it is called from php files and I don't know why.  I know very little about Ajax and I haven't been able to find anything pertinent from my own searches.  I'd be very grateful for any advice

[rhodesa]

in the else, change the line to:

            outputElement.innerHTML = 'There was a problem with the request. '+http_request.status;

to see what the status is.