/* Prefill mailing list input box with required text */
function mailing_list_filler() {
	/* Set default value */
	var default_value='Enter email address';
	/* Check form exists */
	if (document.getElementById('mailing_list_email')) {
		/* Set default value, provided a value is not already in place */
		mailing_list_reset(default_value);
		/* Onfocus default value should be removed */
		document.getElementById('mailing_list_email').onfocus=function() {
			/* Remove default value */
			mailing_list_remove(default_value);
		}
		/* Onblur default value should be restored if nothing entered */
		document.getElementById('mailing_list_email').onblur=function() {
			/* Restore default value */
			mailing_list_reset(default_value);
		}
	}
}

/* Reset default mailing list value */
function mailing_list_reset(initial) {
	if (document.getElementById('mailing_list_email').value=='') {
		document.getElementById('mailing_list_email').value=initial;
	}
}

/* Remove default mailing list value */
function mailing_list_remove(initial) {
	if (document.getElementById('mailing_list_email').value==initial) {
		document.getElementById('mailing_list_email').value='';
	}
}

window.onload=function() {
	mailing_list_filler();
}