function CheckForm(theForm) {
message = "Please enter the following information:\n";
errors = false;
		if (theForm.first_name.value.length < 1) {
			message +="First name\n";
			errors = true;
		}
		if (theForm.last_name.value.length < 1) {
			message +="Last name\n";
			errors = true;
		}
		if (theForm.company.value.length < 1) {
			message +="Company\n";
			errors = true;
		}
		if (!validEmail(theForm.email.value)) {
			message +="Valid email address\n";
			errors = true;
		}
		if (errors) {
			alert(message);
			return false;
		}
	return true
}

function validEmail(email){
	invalidChars = "/:,;"
	if (email == ""){ return false}
	for (i=1; i<invalidChars.length; i++){
		badChar = invalidChars.charAt(i)
		if (email.indexOf(badChar,0) != -1){ return false}
		}
	atPos = email.indexOf("@",1)
	if (atPos == -1) return false;
	if (email.indexOf("@",atPos+1) != -1) return false;
	periodPos = email.indexOf(".",atPos)
	if (periodPos == -1) return false;
	if (periodPos+3 > email.length) return false;
	return true
	}