function validate() {
var errormessage = new String();

if(WithoutContent(document.contact.name.value))
	{ errormessage += "\n\nFill in your name."; }
if(WithoutContent(document.contact.email.value))
	{ errormessage += "\n\nFill in your email."; }
if(WithoutContent(document.contact.subject.value))
	{ errormessage += "\n\nFill in a subject."; }
if(WithoutContent(document.contact.message.value))
	{ errormessage += "\n\nFill in a message."; }

if(errormessage.length > 2) {
	alert('Please fill in all fields' + errormessage);
	return false;
	}
return true;
}

function WithoutContent(content) {
if(content.length > 0) { return false; }
return true;
}