Problem with AJAX in Firefox

Hi,

I have the following source –

[code]
<input type=”text” name=”foo” id=”foo” onkeyup=”doThis(this.value);”/>
[/code]

(this is the html)

[code]
function createRequestObject() {
var req;
if(window.XMLHttpRequest){
req = new XMLHttpRequest();
} else if(window.ActiveXObject) {
req = new ActiveXObject(“Msxml2.XMLHTTP”);
if (! req){
req = new ActiveXObject(“Microsoft.XMLHTTP”);
}
}
else {
alert(‘#?+*!’);
}
return req;
}
var http = createRequestObject();
function doThis(flag) {
http.open(“get”, “search.php?flag=”+flag);
http.onreadystatechange = handleResponse_doThis;
http.send(null);

function handleResponse_doThis() {
if(http.readyState == 4 && http.status == 200){
var response = http.responseText;
if(response) {
list value1
list value2
list value3
….
}
}
}
[/code]

(this is in js file)

It is quite simple ajax example – when key is pressed – k for instance – the list of values starting with ‘k’ appear in a div. It is working ok if I press always normal characters(a-z for instance). But if I press ‘%’ nothing happens. And here comes the funny(for me) part – if I just switch to other Firefox browser on my window and then come back to the search page, I see that ‘%’ worked out – I see all words displayed in the div. Why this happens only when I switch to other browser window and then switch back? It seems that some refreshing is delayed or triggered by switch to other browser window? And also strange for me – this works perfectly in IE – by typing ‘%’ list of all elements is displayed. That puts me in mind that XMLHttpRequest
make something, but I can’t find it out.
Any ideas and help?

Thanks in advance.

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