function fieldFocus(element, text)
{
	if(text == element.value) {
		element.value = "";
	}
}
function fieldBlur(element, text)
{
	if("" == element.value) {
		element.value = text;
	}
}

function checkForm()
{
    emailaddress = document.getElementById('emailaddress');
    if("your@email.com" == emailaddress.value) {
        alert("Please enter a valid email address");
        return false;
    } else {
        document.subscribeform.submit();
    }
}