// JavaScript Document
function getFormValues(fobj) 
{ 
   var str = ""; 
   var valueArr = null; 
   var val = ""; 
   var cmd = ""; 

   for(var i = 0;i < fobj.elements.length;i++) 
   { 
       switch(fobj.elements[i].type) 
       { 
           case "hidden": 
                str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&"; 
                break;        	
           case "text": 
                str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&"; 
                break; 
           case "password": 
                str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&"; 
                break; 				
           case "textarea": 
                str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&"; 
                break; 
           case "radio": 
           		if (fobj.elements[i].checked) {
                	str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&"; 
           		}
                break; 
           case "checkbox": 
           		if (fobj.elements[i].checked) {
                	str += fobj.elements[i].name + "=" + escape(fobj.elements[i].value) + "&"; 
           		}
                break;                 
           case "select-one": 
                str += fobj.elements[i].name + "=" + fobj.elements[i].options[fobj.elements[i].selectedIndex].value + "&"; 
                break; 
       } 
   } 
   str = str.substr(0,(str.length - 1)); 
   return str; 
}

var http = null;;

function sub(f,file) 
{ 
   var str = getFormValues(f); 
   http = sendRequest(file,str); 
} 

function createRequestObject()
{
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http = new XMLHttpRequest();
		if (http.overrideMimeType) {
			http.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}	

	if (!http) {
		alert('Cannot create XMLHTTP instance');
		return false;
	} else {
		return http;
	}
}

function sendRequest(file,str) {
	// Open PHP script for requests
	http = createRequestObject();
	http.open("POST", file, true);
	http.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
	http.onreadystatechange = handleResponse;
	http.send(str);
	return http;
}

function handleResponse() {
	if(http.readyState == 4 && http.status == 200){
		// Text returned FROM PHP script
		var response = http.responseText;
		if(response) {
			document.getElementById("myform").innerHTML = response;
		} else {
			alert('There was a problem with the request.');
		}
	}
}