// **BEGIN DATA VALIDATION FUNCTIONS**
// JavaScript sees numbers with leading zeros as octal values, so strip zeros
function stripZeros(inputStr) {
	if (inputStr == "") {
		inputStr = 0
	}
	return parseInt(inputStr, 10).toString()
}

// general purpose function to see if an input value has been entered at all
function isEmpty(inputStr) {
	if (inputStr == "" || inputStr == null) {
		return true
	}
	return false
}

// general purpose function to see if a suspected numeric input 
// is a positive integer
function isNumber(inputStr) {
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.substring(i, i + 1)
		if (oneChar < "0" || oneChar > "9") {
			return false
		}
	}
	return true
}

// function to determine if value is in acceptable range for this application
function inRange(inputStr) {
	num = parseInt(inputStr)
	if (num < 1 || num > 586 && num < 596 || num > 599 && num < 700 || num > 728) {
		return false
	}
	return true
}

// Master value validator routine
function isValid(inputStr) {
	if (isEmpty(inputStr)) {
		alert("Postnummer er blank")
		return false
	} else {
		if (!isNumber(inputStr)) {
			alert("Ikke gyldig postnummer")
			return false
		} 
	}
	return true
}
// **END DATA VALIDATION FUNCTIONS**

// **LOOKUP FUNCTION**
// hent postnr via ajax 
var theForm = null;
function search(form, field) {
	theForm = form;
	if (field == 0) {
		makeRequest("getpoststed.asp?zipno=" + stripZeros(form.pickUpZip.value) + "&countryid=" + form.pickUpCountry_hidden.value,getPostSted, null, form.pickUpPlace);
	}
	else if (field == 1) {
		makeRequest("getpoststed.asp?zipno=" + stripZeros(form.delivZip.value) + "&countryid=" + form.delivCountry_hidden.value,getPostSted, null, form.delivPlace);
	}
	else if (field == 2) {
		makeRequest("getpoststed.asp?zipno=" + stripZeros(form.txtZipDel.value) + "&countryid=" + form.txtDelCountry.value,getPostSted, null, form.txtPlaceDel);
	}
	else if (field == 3) {
		makeRequest("getpoststed.asp?zipno=" + stripZeros(form.txtZip.value) + "&countryid=" + form.txtCountry.value,getPostSted, null, form.txtPlace);
	}
}
function getPostSted(req, resultObj){
	var form = theForm;
	resultObj.value = req.responseText;
}
// start search if input field receives a Return character
function searchOnReturn(form, evt, field) {
	evt = (evt) ? evt : (window.event) ? window.event : ""
	if (evt) {
		var theKey = (evt.which) ? evt.which : evt.keyCode
		if (theKey == 13) {
			search(form, field)
			return false	
		}
	}
	return true

}