Coding Forum

<div id="form">
<form>
 <table width="400" border="0" align="center" cellpadding="0" cellspacing="0">
        <tr>
          <td class="brd">
           <div class="mg">
              <p align="center">Enter your message below:</p>
                <br />
              <table width="400" border="0" align="center" cellpadding="4" cellspacing="0">
                <tr> 
                  <td><label>Full Name:</label></td>
                  <td><input type="text" id="name" size="30" /></td>
                </tr>
                <tr> 
                  <td><label>Your Email:</label></td>
                  <td><input type="text" id="email" size="30" /></td>
                </tr>
                <tr> 
                  <td><label>Your Subject:</label></td>
                  <td><input type="text" id="subject" size="30" /></td>
                </tr>
                <tr> 
                  <td valign="top"><label>Your Message:</label></td>
                  <td><textarea name="body" rows="4" id="bodymsg"></textarea></td>
                </tr>
                <tr align="center"> 
                  <td colspan="2"><input type="button" value="Submit" id="submit" onClick="return check_values();"></td>
                </table>
                </div>
                </td>
                </tr>
              </table>
          </form>
    <div id="confirmation" style="display:none" align="center"></div>

var http = createRequestObject();
var areal = Math.random() + "";
var real = areal.substring(2,6);

function createRequestObject() {
    var xmlhttp;
    try { xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); }
  catch(e) {
    try { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}
    catch(f) { xmlhttp=null; }
  }
  if(!xmlhttp&&typeof XMLHttpRequest!="undefined") {
      xmlhttp=new XMLHttpRequest();
  }
    return  xmlhttp;
}

function sendRequest() {
    var rnd = Math.random();
    var name = escape(document.getElementById("name").value);
    var email = escape(document.getElementById("email").value);
    var subject = escape(document.getElementById("subject").value);
    var body = escape(document.getElementById("body").value);

    try{
    http.open('POST',  'pform.php');
    http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    http.onreadystatechange = handleResponse;
        http.send('name='+name+'&email='+email+'&subject='+subject+'&body='+body+'&rnd='+rnd);
    }
    catch(e){}
    finally{}
}

function check_values() {
    var valid = '';
    
    var name = document.getElementById("name").value;
    var email = document.getElementById("email").value;
    var subject = document.getElementById("subject").value;
    var body = document.getElementById("body").value;
    if(trim(name) == "" ||
        trim(email) == "" ||
        trim(subject) == "" ||
        trim(body) == "") {
            alert("Please complete all fields");
    } else {
        if(isEmail(email)) {
            document.getElementById("submit").disabled=true;
            document.getElementById("submit").value='Please Wait..';
            sendRequest();
        } else {
            alert("Email appears to be invalid.nPlease check.");
            document.getElementById("email").focus();
            document.getElementById("email").select();
        }
    }
}

function handleResponse() {
    try{
    if((http.readyState == 4)&&(http.status == 200)){
        var response = http.responseText;
      document.getElementById("confirmation").innerHTML = response;
      document.getElementById("confirmation").style.display ="";
        }
  }
    catch(e){}
    finally{}
}

function isUndefined(a) {
   return typeof a == 'undefined';
}

function trim(a) {
    return a.replace(/^s*(S*(s+S+)*)s*$/, "$1");
}

function isEmail(a) {
   return (a.indexOf(".") > 0) && (a.indexOf("@") > 0);
}