// validate data on submitting form 
function checkData() {
	// Name
	if ((document.contactform.name.value == "")/*||(document.contactform.name.value == "Your Name")*/)
	{
		alert("Please fill in your Name"); // show error message
		document.contactform.name.focus(); // place cursor in field
		document.contactform.name.select(); // select all text in field
		return false;
	}
	// Email
	if (document.contactform.email.value == "")
	{
		alert("Please fill in your Email");
		document.contactform.email.focus();
		return false;
	}
	// Subject
	if (document.contactform.subject.value == "") 
	{
		alert("Please fill in your Subject");
		document.contactform.subject.focus();
		return false;
	}
	// Message
	if ((document.contactform.message.value == "")/*||(document.contactform.message.value == "Type your message here")*/)
	{
		alert("Please fill in your Message");
		document.contactform.message.focus();
		document.contactform.message.select();
		return false;
	}
}