function extractNumber(num) {
	num = num.replace(/[, $]/g,'');
	return num;
}

function validateEmail(x) {
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9])+$/;
	return filter.test(x);
}