function openExternalWarningWindow(url,name,w,h) {
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars=yes,resizable=no,menubar=no,toolbar=no,status=no,location=no';
	window.open(url,name,settings);
	return false;
}

function openWindow(url) {
	$('#overlay').fadeIn('medium');
	$("a.redirect").attr("href", url);
	return false;
}
function closeWindow() {
	$('#overlay').fadeOut('medium');
	return false;
}	

function checkEmail(email) {
		thisemail = $(email).val();
		filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (filter.test(thisemail)) {return true;} else {return false;}		
}