function createRequestObject2() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject2();

function emaildavid(email,your_name,david_message,captcha,captcha_code) {
    var params = "email="+email+"&your_name="+your_name+"&david_message="+david_message+"&captcha="+captcha+"&captcha_code="+captcha_code;
    http.open('POST', '/home/emaildavidajax/',true);
    http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http.setRequestHeader("Content-length", params.length);
    http.setRequestHeader("Connection", "close");
    http.onreadystatechange = handleResponsestep3;
    http.send(params);
}

function handleResponsestep3() {
    if(http.readyState == 4){
        var response = http.responseText;
        var splitter = response.split("_");
        document.getElementById('errmsg').innerHTML = splitter[0];
        document.getElementById('captcha_image').innerHTML = "<img src='/contact/image/"+splitter[1]+"' alt='Captcha Image' /><input type='hidden' id='imageid' name='imageid' value='"+splitter[1]+"' />";
        //document.getElementById('boom').style.backgroundColor = "red";
    }
    else
    {
        document.getElementById('errmsg').innerHTML = "<img src='/images/loading.gif'>";
    }
}