function validateForm(frm) {
	if (frm.purchaseordernum.value=="") {
		alert ("Please provide us Purchase Order number.");
		frm.purchaseordernum.focus();
		return false;
	}
	if (frm.billname.value=="") {
		alert ("Please provide us with your Name.");
		frm.billname.focus();
		return false;
	}
	if (frm.phonenumber.value=="") {
		alert ("Please provide us with your Phone number.");
		frm.phonenumber.focus();
		return false;
	}
	if (!validateEmail(frm.emailadd.value)) {
		frm.emailadd.focus();
		alert ("Please provide a valid email address.\r");
		return false;
		}
return true;
}

function validateEmail(email) {
	invalidChars = "/:,;";
	if (email=="") {
		return false;
	}
	for (i=0; 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;
}