load items in iframe clicking flash btn

<script type="text/JavaScript">

function makeObject(){
var x;
var browser = navigator.appName;
if(browser == "Microsoft Internet Explorer"){
x = new ActiveXObject("Microsoft.XMLHTTP");
}else{
x = new XMLHttpRequest();
}
return x;
}

var request = makeObject();


function getPage(page){
    
    //The function open() is used to open a connection.
    //Parameters are 'method' and 'url'. For this tutorial we use GET.
    //We send it to 'test.php?id=' and add the index from our SELECT form field
    
    
    request.open('post', 'getPage.php');
    
    request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");

    //This tells the script to call parseInfo() when the ready state is changed.
    request.onreadystatechange = parseInfo;

    //This sends whatever we need to send. Unless you're using POST as method, the parameter is to remain empty.
    
    getstr='page='+page;
    request.send(getstr);
}

function parseInfo(){
    if(request.readyState == 1){
        
        //While we are still waiting for a response, we replace whatever's in the div # 'my_div' with
        //the text 'Loading...'.
        document.getElementById('my_div').innerHTML = '<img src="assets/loading.gif" />';
    }
    if(request.readyState == 4){

        //request.responseText holds the response we got from the server.
        //We assign it to a variable and replace the content of 'my_div' when it's done loading
        var answer = request.responseText;

        document.getElementById('my_div').innerHTML = answer;
    }
}
</script>