var vDate = new Date();
var vYear = vDate.getFullYear();
var regex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;

function over(what, which) {
	what.src = which;
}

function getEmail() {
	var emailInput = document.getElementById('email');
	
	if (regex.test(emailInput.value))
		popupWin('http://t.4at1.com/was1022/reg.html?source=poseidon&title=poseidon&email=' + emailInput.value, 'update', '670', '600', '0', '1','0','0', '0', '0','0');
	else
		alert('Please enter a valid E-mail address.');
}