function verifySignUp(f){
	var strFail="";
	var regex_email=/^([A-Za-z0-9'_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([A-Za-z0-9'\-]+\.)+))([A-Za-z]{2,4}|[0-9]{1,3})(\]?)$/;
	if(!f.firstname.value.length){
		strFail += "Please enter your first name.\n";
	}
	if(!f.lastname.value.length){
		strFail += "Please enter your last name.\n";
	}
	if(!regex_email.test(f.email.value)){
		strFail += "Please supply a valid email address.\n";
	}
	if(strFail.length){
		alert(strFail);
		return false;
	}
	else{
		return true;
	}
}