// JavaScript Document
function isAlpha(elm) {
    var pattern = /^[a-zA-Z '-]*$/;
	//alert ("isAlpha called for: " + elm.value);
	result = pattern.test(elm.value);
	//alert ("isAlpha result: " + result);
    return result;
}    

function isEmail(elm) {
    var pattern = /^[a-zA-Z0-9.\-_ ]+\@[a-zA-Z0-9 \-_\.]+\.([a-zA-Z]{2,3})$/;
	//alert("Isemail called with: " + elm);
    if (pattern.test(elm.value)) {
        return true;
    }
    else {
        return false;
    }
}    
function isPhone(elm) {
   var pattern = /([0-9 ()-])$/;
	//alert("IsPhone called with: " + elm);
    if (pattern.test(elm.value)) {
        return true;
    }
    else {
        return false;
    }
}   
 
// JavaScript Document
function checkdate(objName) {
var datefield = objName;
if (chkdate(objName) == false) {
datefield.select();
alert("That date is invalid.  Please try again.");
datefield.focus();
return false;
}
else {
return true;
   }
}
function chkdate(objName) {
//var strDatestyle = "US"; //United States date style
var strDatestyle = "EU";  //European date style
var strDate;
var strDateArray;
var strDay;
var strMonth;
var strYear;
var intday;
var intMonth;
var intYear;
var booFound = false;
var datefield = objName;
var strSeparatorArray = new Array("-"," ","/",".");
var intElementNr;
var err = 0;
var strMonthArray = new Array(12);
strMonthArray[0] = "Jan";
strMonthArray[1] = "Feb";
strMonthArray[2] = "Mar";
strMonthArray[3] = "Apr";
strMonthArray[4] = "May";
strMonthArray[5] = "Jun";
strMonthArray[6] = "Jul";
strMonthArray[7] = "Aug";
strMonthArray[8] = "Sep";
strMonthArray[9] = "Oct";
strMonthArray[10] = "Nov";
strMonthArray[11] = "Dec";
strDate = datefield.value;
if (strDate.length < 1) {
return true;
}
for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++) {
if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1) {
strDateArray = strDate.split(strSeparatorArray[intElementNr]);
if (strDateArray.length != 3) {
err = 1;
return false;
}
else {
strDay = strDateArray[0];
strMonth = strDateArray[1];
strYear = strDateArray[2];
}
booFound = true;
   }
}
if (booFound == false) {
if (strDate.length>5) {
strDay = strDate.substr(0, 2);
strMonth = strDate.substr(2, 2);
strYear = strDate.substr(4);
   }
}
if (strYear.length == 2) {
strYear = '20' + strYear;
}
// US style
if (strDatestyle == "US") {
strTemp = strDay;
strDay = strMonth;
strMonth = strTemp;
}
intday = parseInt(strDay, 10);
if (isNaN(intday)) {
err = 2;
return false;
}
intMonth = parseInt(strMonth, 10);
if (isNaN(intMonth)) {
for (i = 0;i<12;i++) {
if (strMonth.toUpperCase() == strMonthArray[i].toUpperCase()) {
intMonth = i+1;
strMonth = strMonthArray[i];
i = 12;
   }
}
if (isNaN(intMonth)) {
err = 3;
return false;
   }
}
intYear = parseInt(strYear, 10);
if (isNaN(intYear)) {
err = 4;
return false;
}
if (intMonth>12 || intMonth<1) {
err = 5;
return false;
}
if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1)) {
err = 6;
return false;
}
if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) {
err = 7;
return false;
}
if (intMonth == 2) {
if (intday < 1) {
err = 8;
return false;
}
if (LeapYear(intYear) == true) {
if (intday > 29) {
err = 9;
return false;
}
}
else {
if (intday > 28) {
err = 10;
return false;
}
}
}
if (strDatestyle == "US") {
datefield.value = strMonthArray[intMonth-1] + " " + intday+" " + strYear;
}
else {
//alert("Valid date is: " + intday + " " + strMonthArray[intMonth-1] + " " + strYear);
datefield.value =  intday + "/" + intMonth + "/" + strYear;
}
return true;
}
function LeapYear(intYear) {
if (intYear % 100 == 0) {
if (intYear % 400 == 0) { return true; }
}
else {
if ((intYear % 4) == 0) { return true; }
}
return false;
}
function doDateCheck(from, to) {
if (Date.parse(from.value) <= Date.parse(to.value)) {
alert("The dates are valid.");
return true;
}
else {
if (from.value == "" || to.value == "") 
alert("Both dates must be entered.");
else 
alert("End date must occur after the Start date.");
   }
 return false;
}
//*************************************************
// Time checking
//*************************************************
function IsValidTime(timeStr) {
// Checks if time is in HH:MM:SS AM/PM format.
// The seconds and AM/PM are optional.

//alert("IsValidTIme called for time: " + timeStr);

var timePat = /^(\d{1,2}):(\d{2})$/;
//var timePat = /^(\d{1,2}):(\d{2})(:(\d{2}))?(\s?(AM|am|PM|pm))?$/;

var matchArray = timeStr.match(timePat);
if (matchArray == null) {
	return false;
	}
hour = matchArray[1];
minute = matchArray[2];
//second = matchArray[4];
//ampm = matchArray[6];

//if (second=="") { second = null; }
//if (ampm=="") { ampm = null }

if (hour < 0  || hour > 23) {
	//alert("Hour must be between 1 and 23.");
	return false;
	}
if (minute<0 || minute > 59) {
	//alert ("Minute must be between 0 and 59.");
	return false;
	}
return true;
}

function GetHour(timeStr) {

//alert("GetHour called for time: " + timeStr);

var timePat = /^(\d{1,2}):(\d{2})$/;
var hour, minute;
var matchArray = timeStr.match(timePat);
if (matchArray == null) {
	return -1;
	}
hour = matchArray[1];

if (hour < 0  || hour > 23) {
	//alert("Hour must be between 1 and 23.");
	return -1;
	}
return hour;
}
function GetMinute(timeStr) {

//alert("GetMinute called for time: " + timeStr);

var timePat = /^(\d{1,2}):(\d{2})$/;
var hour, minute;
var matchArray = timeStr.match(timePat);
if (matchArray == null) {
	return -1;
	}
minute = matchArray[2];

if (minute<0 || minute > 59) {
	//alert ("Minute must be between 0 and 59.");
	return -1;
	}
return minute;
}

function TimeAfter (elm1, elm2) {
	var h1,h2,m1,m2,ph1,ph2,pm1,pm2,hd,md;

// returns true if time in element 1 is after time in element 2
	
	ph1 = GetHour(elm1.value);
	pm1 = GetMinute(elm1.value);
	ph2 = GetHour(elm2.value);
	pm2 = GetMinute(elm2.value);
	
	// check that start time is before end time
	hd = ph2 - ph1;
	md = pm2 - pm1;
	
	if ((hd < 0) || ((hd == 0) && (md < 0)) ) {
		return true;
		} else {
		return false;
		}

}
//*************************************************
// Date checking
//*************************************************
function IsValidDate(dateStr) {
// Checks if time is in DD/MM/YY format.
// The seconds and AM/PM are optional.

var datePat = /^(\d{1,2})\/(\d{1,2})\/(\d{2,4})$/;

var matchArray = dateStr.match(datePat);
if (matchArray == null) {
alert("Date is not in a valid format.");
return false;
}
day = matchArray[1];
month = matchArray[2];
year = matchArray[3];

alert("Validating: " + day + "/" + month  + "/" + year);

if (day < 1  || day > 31) {
	alert("Day must be between 1 and 31.");
	return false;
	}
if  (month < 1 || month > 12 ) {
	alert("Month must be between 1 and 12");
	return false;
	}
if (year < 0 && year > 99) {
	alert ("Year must be between 0 and 99.");
	return false;
	}
	return false;
}

function isReady(form) {
	var at = "@";
	var dot = ".";
	
	//alert("isReady called for " + form.name);
    if (form.fullname.value == "") {
        alert("Please enter your name.");
        form.fullname.focus();
        return false;
    } else
    if (isAlpha(form.fullname) == false) {
        alert("Please enter letters only for name.");
        form.fullname.focus();
        return false;
    } else
    if (form.phone.value == "") {
        alert("Please enter your contact telephone number.");
        form.phone.focus();
        return false;
    } else
    if (isPhone(form.phone) == false) {
        alert("Please enter numbers only for telephone.");
        form.phone.focus();
        return false;
    } else
    if (form.email.value == "") {
        alert("Please enter an email address.");
        form.email.focus();
        return false;
    } else
    if (isEmail(form.email) == false) {
        alert("Please enter a valid email address.");
        form.email.focus();
        return false;
    } else
	if (form.name == "bborderform") {
		if (form.bbphone.value == "") {
        	alert("Please enter your broadband telephone number.");
        	form.bbphone.focus();
        	return false;
    	} else
    	if (isPhone(form.bbphone) == false) {
        	alert("Please enter numbers only for broadband telephone number.");
        	form.bbphone.focus();
        	return false;
    	}  // end of bborderphone
	} // end of bborderform checks
	form.recipient.value = "info" + at + "redgreenblue" + dot + "co" + dot + "uk";
	//alert("Form OK. Sending to: " + form.recipient.value);
    return true;
}

function MM_callJS(jsStr) { //v2.0
  return eval(jsStr);
}

function RGB_checkworms(form) {
	// check for any scripts planted in the form fields
	var pattern = /<\s*script|object|applet|embed|form\s*>/;
	//alert("Checking for script worms");
	for (var i=0; i<form.elements.length; i++) {
		var val = form.elements[i].value, found=0;
		var uval = val.toLowerCase();
		if (pattern.test(uval)) {
			alert("Please don't try to plant scripting attacks in the form");
			form.elements[i].focus();
			return false;
			}	
			
		}
	return true;
}

function RGB_checkpass(form) {
	// check the two password fields are the same and between 6-12 alphanumeric chars characters
	var pattern = /[\w\W]{6,12}/;
	var p1, p2;
	p1 = form.password1.value;
	p2 = form.password2.value;
	//alert('Check Password called:\nP1= ' + p1 + '\nP2= ' + p2);

    if (!pattern.test(p1)) {
		alert('Password1 contains non alphanumeric characters or is not 6-12 characters long');
		form.password1.focus();
		return false;
	}
    if (!pattern.test(p2)) {
		alert('Password2 contains non alphanumeric characters or is not 6-12 characters long');
		form.password1.focus();
		return false;
	}
	if (p1.length != p2.length) {
		alert('Passwords are not the same length');
		form.password1.focus();
		return false;
	}
	if (p1 != p2) {
		alert('Passwords are not the same');
		form.password1.focus();
		return false;
	}
	//alert('passwords are OK');
	return true;
}
function RGB_checkupdates(form) {
	var checkstatus, memtype, subscription = false;
	var group1 = form.membertype;
	var group2 = form.subscription;
	for (var i=0; i<group1.length; i++) {
		if (group1[i].checked) memtype = i;
	}
	for (var i=0; i<group2.length; i++) {
		if (group2[i].checked) subscription = true;
	}
	//alert('Checkbox called: '+ checkstatus + ' for member ' + memtype);
	if (subscription && memtype == 0) {
		alert('Subscriptions are only available for TMI Digital membership.\nPlease select the TMI Digital box if you wish to purchase a subscription.\nIf not please deselect the subscription box.');
		return false;
	}
	checkstatus = form.memberupdates.checked;
	if (!checkstatus && memtype == 0) {
		alert ('TMI Online is made available free to treasury professionals only thanks to the support of our website sponsors. As such, your details may be passed to our sponsors. so that we may post relevant articles to the site, notify you of new articles and of relevant treasury products - we need your permission to do this - no other third parties will receive your information.\n\nIf you are happy to share this information please tick the Free Online Subscritpion box.\n\nIf you do not choose to share this information with our sponsors, but wish to have access to the site and to download unlimited articles over the next 12 months, you will need to take out a full online subscription for just €450. Please visit our subscription page to register.');
		return false;
	}	
	return true;
}
function RGB_checkbox(form) {
	var check;
	checkstatus = form.readterms.checked;
	//alert('Checkbox called: '+ checkstatus);
	if (!checkstatus) {
		alert ('Please tick the box to confirm that you have read our terms & conditions for downloading materials from this site.');
		return false;
	}
	return true;
}
function RGB_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=RGB_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function RGB_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=RGB_validateForm.arguments;
  //alert("RGB Validateform called. Args = " + args);
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=RGB_findObj(args[i]);
    if (val) { nm=val.name; elm = val; if ((val=val.value)!="") {
		
      if (test.indexOf('isPhone')!=-1) { 
	  	 if (!isPhone(elm)) errors+='- '+nm+' is not a valid telephone number.\n';
      } else if (test.indexOf('isTime')!=-1) { 
	  	 if (!IsValidTime(val)) errors+='- '+nm+' is not a valid time. (hh:mm)\n';
      } else if (test.indexOf('isDate')!=-1) { 
	  	 if (!checkdate(elm)) errors+='- '+nm+' is not a valid date. (dd/mm/yy)\n';
      } else if (test.indexOf('isEmail')!=-1) { 
	  	 if (!isEmail(elm)) errors+='- '+nm+' must contain a valid e-mail address.\n';
      } else if (test.indexOf('isChecked')!=-1) { 
	  	 if (!nm.checked) errors+='- '+nm+' must be checked\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } 
  if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}