function chk() {
	rc = '';
	if ( location.search.length > 1 ) {
		rc = location.search.substr(1,1);
		location.search = '';
		if ( rc == 'y') { alert('Confirmation details are being sent to you by e-mail.\n\nWe and our many clients thank you for contributing to this important work!'); }
		if ( rc == 'n') { alert('Thank you for considering support to this important work.');
			}
		}
	}
window.onload = function() {
	if (document.getElementById('vr')) {
		document.getElementById('vr').target = "vr_optin_popup";
		}
	}