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

function emailHandle(value) {
	if(value == '') {
		document.getElementById("email_newsletter").value = 'email address';
	} else if(value == 'email address') {
		document.getElementById("email_newsletter").value = '';	
	}
}

function submitEmail() {
	email = document.getElementById("email_newsletter").value;
	document.getElementById("email_newsletter").value = '...';
	
	var ajx = new ajax;
	ajx.open('get', 'script/ajax.php?action=submitemail&email=' + email, true);
	ajx.onreadystatechange = function() {
	   if(ajx.readyState == 4) {
		  	alert(ajx.responseText);
			document.getElementById("email_newsletter").value = 'You are signed up. Thanks!';		
	   }
	}
	ajx.send(null);
}

function checkContactForm() {
	if(document.contactForm.name.value == '') {
		alert("Please enter your name.");	
	} else if(document.contactForm.email.value == '') {
		alert("Please enter your email.");	
	} else if(document.contactForm.message.value =='') {
		alert("Please enter your message.");	
	} else {
		document.contactForm.submit();
	}	
}