// JavaScript Document
function GetXmlHttpObject()
{
  var xmlHttp=null;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    }
  return xmlHttp;
}
function add_comment(form)
{
	var alerttext="";
	if(form.title.value=="")
	{
		alerttext="Title is required.\n";
	}
	if(form.comments.value=="")
	{
		alerttext+="Comment is required.\n";
	}
	if(form.secnum.value=="")
	{
		alerttext+="security text is required.\n";
	}
	if(form.name.value=="")
	{
		alerttext+="name is required.\n";
	}
	if(form.email.value=="")
	{
		alerttext+="email is required.\n";
	}
	if(alerttext.length >= 10)
	{
		alert(alerttext);
		return;
	}
	else
	{
		xmlHttp=GetXmlHttpObject()
		if (xmlHttp==null)
		{
			alert ("Your browser does not support AJAX!");
			return;
		}
		var file="/kmitap/addform.php";
		var str="title="+form.title.value+"&comments="+form.comments.value+"&name="+form.name.value+"&email="+form.email.value+"&secnum="+form.secnum.value;
	 	xmlHttp.onreadystatechange=commentstateChanged;
		post(xmlHttp,str,file);
	}
	
}
function post(xmlHttp,str,file)
{
	xmlHttp.open( "POST", file, true ); 
  	xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8"); 
	xmlHttp.send(str); 
}
function commentstateChanged()
{
	if (xmlHttp.readyState==4)
	{ 
		document.getElementById("kmitap").innerHTML=xmlHttp.responseText;
	}
}