//Common
var http = false;
var ajaxurl = 'code/ajax.php?';

function createRequestObject()
{
  var xmlhttp;
  /*@cc_on
  @if (@_jscript_version >= 5)
    try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
        xmlhttp = false;
      }
    }
  @else
  xmlhttp = false;
  @end @*/

  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}

function cursorOver() {
    document.body.style.cursor = 'pointer';
}

function cursorClear() {
    document.body.style.cursor = 'default';
}

var dtCh= "/";
var minYear=2007;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
       var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}

function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		return false
	}
return true
}

function echeck(str)
{
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		return false
	 }

	 return true					
}

//Price Updates
function updateHomePrice()
{
	var ddnSendingOption = document.getElementById('ddnSendingOption').options[document.getElementById('ddnSendingOption').selectedIndex].value;
	var ddnQuantity = document.getElementById('ddnQuantity').options[document.getElementById('ddnQuantity').selectedIndex].value;
	var txtLength = document.getElementById('txtLength').value;
	var txtWidth = document.getElementById('txtWidth').value;
	var txtHeight = document.getElementById('txtHeight').value;
	
	http = createRequestObject(); 
	if(http)
	{
		document.body.style.cursor = 'wait';
		http.open("GET", ajaxurl + "ajaxMethod=updateHomePrice&ddnSendingOption=" + ddnSendingOption + "&ddnQuantity=" + ddnQuantity + "&txtLength=" + txtLength + "&txtWidth=" + txtWidth + "&txtHeight=" + txtHeight, true);
		
		http.onreadystatechange = handleupdateHomePrice;
		http.send(null);
	}
}

function handleupdateHomePrice()
{
	if(http.readyState == 4)
	{
		document.body.style.cursor = 'default';	
		var field = document.getElementById('priceField');
		field.innerHTML = http.responseText;
		var btnSubmit = document.getElementById('btnSubmit');
		if(field.innerHTML == "No Price")
		{
			btnSubmit.disabled = true;
		}else
		{
			btnSubmit.disabled = false;		
		}
	}
}

function updatePostCode1(fieldName)
{
	http = createRequestObject(); 
	if(http)
	{
		document.body.style.cursor = 'wait';
		http.open("GET", ajaxurl + "ajaxMethod=updatePostCode&postCode=" + document.getElementById(fieldName).value, true);
		http.onreadystatechange = handleupdatePostCode1;
		http.send(null);
	}
}

function handleupdatePostCode1()
{
	if(http.readyState == 4)
	{
		document.body.style.cursor = 'default';	
		var field = document.getElementById('postCode1');
		if(http.responseText != "")
		{
			field.innerHTML = 'This postcode is covered by our service.';
		}else
		{
			field.innerHTML = 'Sorry, this postcode is not covered by our service.';
		}
	}
}

function updatePostCode2(fieldName)
{
	http = createRequestObject(); 
	if(http)
	{
		document.body.style.cursor = 'wait';
		http.open("GET", ajaxurl + "ajaxMethod=updatePostCode&postCode=" + document.getElementById(fieldName).value, true);
		http.onreadystatechange = handleupdatePostCode2;
		http.send(null);
	}
}

function handleupdatePostCode2()
{
	if(http.readyState == 4)
	{
		document.body.style.cursor = 'default';	
		var field = document.getElementById('postCode2');
		if(http.responseText != "")
		{
			field.innerHTML = 'This postcode is covered by our service.';
		}else
		{
			field.innerHTML = 'Sorry, this postcode is not covered by our service.';
		}
	}
}

function CurrencyFormatted(amount)
{
	var i = parseFloat(amount);
	if(isNaN(i)) { i = 0.00; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	i = parseInt((i + .005) * 100);
	i = i / 100;
	s = new String(i);
	if(s.indexOf('.') < 0) { s += '.00'; }
	if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
	s = minus + s;
	return s;
}

function updatePrice()
{
	var ddnSendingOption = document.getElementById('ddnSendingOption').options[document.getElementById('ddnSendingOption').selectedIndex].value;
	var ddnQuantity = document.getElementById('ddnQuantity').options[document.getElementById('ddnQuantity').selectedIndex].value;
	var txtLength = document.getElementById('txtLength').value;
	var txtWidth = document.getElementById('txtWidth').value;
	var txtHeight = document.getElementById('txtHeight').value;
	
	http = createRequestObject(); 
	if(http)
	{
		document.body.style.cursor = 'wait';
		http.open("GET", ajaxurl + "ajaxMethod=updateHomePrice&ddnSendingOption=" + ddnSendingOption + "&ddnQuantity=" + ddnQuantity + "&txtLength=" + txtLength + "&txtWidth=" + txtWidth + "&txtHeight=" + txtHeight, true);
		
		http.onreadystatechange = handleupdatePrice;
		http.send(null);
	}
}

function handleupdatePrice()
{
	if(http.readyState == 4)
	{
		document.body.style.cursor = 'default';	
		var field = document.getElementById('priceBoxBody');
		var price = http.responseText;
		field.innerHTML = "£" + price + "<br />£" + CurrencyFormatted(price * 0.2) + " VAT<br /><strong>Total</strong>: £" + CurrencyFormatted(price * 1.2);
		var btnSubmit = document.getElementById('btnSubmit');
		if(price == "No Price")
		{
			btnSubmit.style.display = 'none';
		}else
		{
			btnSubmit.style.display = '';	
		}
	}
}