//Checks for valid positive integer (i.e. no decimal, non-integer, or negative numbers allowed)
function CheckPositiveInt(value) {
	//List of valid chars
	var validChars = "0123456789";
	var strChar;
	var result = true;
	if (value.length == 0) return false;
	//Check each character in value that it is valid
	for (i = 0; i < value.length && result == true; i++) {
		strChar = value.charAt(i);
		if (validChars.indexOf(strChar) < 0) {
			result = false;
		}
	}
	return result;
}
function CheckForm90(f) {
	var fname = "CustomFields_1_90";
	var fld = document.getElementById(fname);
	if (fld.value == "") {
		alert("Please enter your First Name");
		fld.focus();
		return false;
	}

	var fname = "CustomFields_2_90";
	var fld = document.getElementById(fname);
	if (fld.value == "") {
		alert("Please enter your Last Name");
		fld.focus();
		return false;
	}
	
	if (f.email.value == "") {
		alert("Please enter your Email Address");
		f.email.focus();
		return false;
	}

	var fname = "CustomFields_7_90";
	var fld = document.getElementById(fname);
	if (fld.value == "") {
		alert("Please enter your Telephone");
		fld.focus();
		return false;
	}

	var fname = "CustomFields_79_90";
	var fld = document.getElementById(fname);
	if (fld.value == "") {
		alert("Please enter your Zip Code");
		fld.focus();
		return false;
	}
	if(!CheckPositiveInt(fld.value)) {
		alert("Please enter a valid Zip Code");
		fld.select();
		fld.focus();
		return false;
	}

	var fname = "CustomFields_211_90";
	var fld = document.getElementById(fname);
	if (fld.selectedIndex == -1 || fld.selectedIndex == 0) {
		alert("Please choose your Program of Interest");
		fld.focus();
		return false;
	}

	var fname = "CustomFields_212_90";
	var fld = document.getElementById(fname);
	if (fld.selectedIndex == -1 || fld.selectedIndex == 0) {
		alert("Please choose your Preferred CCI Campus");
		return false;
	}

	return true;
}