var xmlHttpfunction;

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 stateChanged() {
	
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") {
		
		alert(xmlHttp.responseText);
		
	}
	
}

function send_mail() {
	
	var flag = true;
	var msg ="";
	
	var email1 = document.getElementById('email');
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if(document.getElementById('name').value=="") {
		msg +="name is blank.\n";
		flag = false;
	}
	if (!filter.test(email1.value)) {
		msg +="invalid email address\n";
		flag = false;
	}	
	if(document.getElementById('message').value=="") {
		msg +="message is blank.\n";
		flag = false;
	}
	
	if(flag == false) {
		alert(msg);
	}
	else {
		
		xmlHttp=GetXmlHttpObject();
		if (xmlHttp==null) {
			alert ("Browser does not support HTTP Request");
			return;
		}
		
		var url="sendMail.php";
		var params = "name="+document.getElementById('name').value+"&organization="+document.getElementById('organization').value+"&email="+document.getElementById('email').value+"&message="+document.getElementById('message').value;
		document.getElementById('name').value = "";
		document.getElementById('organization').value = "";
		document.getElementById('email').value = "";
		document.getElementById('message').value = "";
		xmlHttp.onreadystatechange=function(){ stateChanged()};
		xmlHttp.open("POST",url,true);
		xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		xmlHttp.setRequestHeader("Content-length", params.length);
		xmlHttp.setRequestHeader("Connection", "close");
		xmlHttp.send(params);
		
	}	
	
}


function clear_mail() {

	
	document.getElementById('name').value = "";
	document.getElementById('organization').value = "";
	document.getElementById('email').value = "";
	document.getElementById('message').value = "";
}