// form validation code

// commence object definition

// var checkObject=new Object();

function checkObject(objName_, niceName_, fieldType_) {
	this.objName=objName_;
	this.niceName=niceName_;
	this.fieldType=fieldType_;
	
	this.customValidation;
	this.customValidationMessage;
}



function checkObject_toString2() {
	return "Item:"+this.objName;
}

checkObject.prototype.toString=checkObject_toString2;

// constants
var TYPE_NORMAL=0;
var TYPE_EMAIL=1;
var TYPE_COMBO=2;
var TYPE_NUMBER=3;
var TYPE_MULTIPLE_COMBO=4;
var TYPE_COMBO_SB=4;
var TYPE_DATE=5;
var TYPE_CUSTOM=6;
var TYPE_NUMBER_INC_0=7;
var TYPE_CHECKBOX=8;

// end object definition

var objs=new Array();

function reset(){
	objs=new Array();
}

function removePushOn(fieldName)
{
	for (index in objs)
	{
		if (objs[index].objName == fieldName)
		{	
			objs.splice(index, 1)
			
			return;
		}
	}
}

function pushOn(fieldName, niceName, fieldType, customValidation, customValidationMessage) {
	var newObj = new checkObject(fieldName, niceName, fieldType);
	
	newObj.customValidation = customValidation;
	newObj.customValidationMessage = customValidationMessage;
	
	objs.push(newObj);
}

function checkItem(w, objRef) {
	w=w.replace(/^\s*|\s*$/g,"");
	if(objRef.fieldType==TYPE_EMAIL) {
		return ((w.indexOf(".") > 0) && (w.indexOf("@") > 0));
	}else if(objRef.fieldType==TYPE_NORMAL) {
		return !((w=="")||(w=="{nosel}"));
	}else if(objRef.fieldType==TYPE_NUMBER) {
		var wn=parseInt(w);
		return !isNaN(wn)&&(wn>0);
	}else if(objRef.fieldType==TYPE_COMBO) {
		return (w!=-1);
	}else if(objRef.fieldType==TYPE_COMBO_SB) {
		return (w>0);
	}else if(objRef.fieldType==TYPE_MULTIPLE_COMBO) {
		return (w!="");
	}else if(objRef.fieldType==TYPE_DATE) {
		return validateDate(w,'W','A');
	}else if(objRef.fieldType==TYPE_CUSTOM) {
		return objRef.customValidation(w);
	}else if(objRef.fieldType==TYPE_CHECKBOX) {
		return document.getElementById(objRef.objName).checked;
	}else if(objRef.fieldType==TYPE_NUMBER_INC_0) {
		var number=parseInt(w);
		return !isNaN(number)&&(number>=0);
	}
	
}
	
function checkForm() {
	var errors="";
	var errorCount=0;
	var w="";
	
	for(i=0;i<objs.length;i++) {
		if (objs[i] == null) { continue; }
		if(document.getElementById(objs[i].objName)!=null) {
			w=document.getElementById(objs[i].objName).value;
			if(!checkItem(w,objs[i])) {
				if(errorCount<5) {
					if(objs[i].fieldType==TYPE_EMAIL) {
						errors+=">> The '"+objs[i].niceName+"' field does not contain a valid e-mail address.\n";
					}else if((objs[i].fieldType==TYPE_NORMAL)||(objs[i].fieldType==TYPE_COMBO_SB)||(objs[i].fieldType==TYPE_COMBO)||(objs[i].fieldType==TYPE_MULTIPLE_COMBO)) {
						errors+=">> The '"+objs[i].niceName+"' field does not contain valid information.\n";
					}else if(objs[i].fieldType==TYPE_NUMBER) {
						errors+=">> The '"+objs[i].niceName+"' field does not contain a valid number (greater than 0).\n";
					}else if(objs[i].fieldType==TYPE_NUMBER_INC_0) {
						errors+=">> The '"+objs[i].niceName+"' field does not contain a valid number (greater than or equal to 0).\n";
					}else if (objs[i].fieldType == TYPE_DATE)
					{ 
						errors += ">> The '"+objs[i].niceName+"' field is not valid, please enter it in the format dd/mm/yyyy.\n";
					}else if (objs[i].fieldType == TYPE_CUSTOM)
					{
						errors += ">> " + objs[i].customValidationMessage + "\n";
					}else{
						errors+=">> The '"+objs[i].niceName+"' field is not ticked.\n";
					}
				}
				
				errorCount++;
			}
		}
	}
	
	//custom
	if(typeof customValidationFunction == "function"){
		var ret=customValidationFunction();
		if(ret.errorCount) {
			var arr=ret.errorMessages.split("\n");
			for(var i=0;i<arr.length;i++){
				if(arr[i]!=""){
					arr[i]=">> "+arr[i];
				}
			}
			errors+=arr.join("\n");
			errorCount+=ret.errorCount;
		}
		
	}

	if(errorCount>0) {
		var finalString="The following errors were detected:\n\n"+errors;
		if(errorCount>5) {
			finalString+="\n\n... and "+(errorCount-5)+" more.";
		}
		alert(finalString);
	}
	
	return (errorCount==0);
}

function GetSafeDate(date)
{
	var startDate = date.split('/');
		
	var startDateString = "";
		
	for (var i = startDate.length - 1; i >= 0; i--)
	{
		startDateString += startDate[i];
	}
		
	return startDateString;	
}

function CheckDateRange(startDate, endDate)
{
	//Checks startDate is before endDate
	
	var startDateDate = GetDateAsDateObject(startDate);
	var endDateDate = GetDateAsDateObject(endDate);
	
	return (startDateDate <= endDateDate);
}

function GetDateAsDateObject(date)
{
	var dateArr = date.split("/").reverse();

	var dateObj = new Date();
	
	dateObj.setYear(dateArr[0]);
	dateObj.setMonth(dateArr[1]);
	dateObj.setDate(dateArr[2]);
	
	return dateObj;
}

// Date Validation Javascript
// copyright 30th October 2004, by Stephen Chapman
// http://javascript.about.com

// You have permission to copy and use this javascript provided that
// the content of the script is not changed in any way.

function validateDate(datefmt)
{
	myOption = -1;
	
	for (i=0; i<datefmt.length; i++)
	{
		if (datefmt[i].checked)
		{
			myOption = i;
		}
	}
	
	if (myOption == -1) 
	{
		alert("You must select a date format");return ' ';
	}
	
	return datefmt[myOption].value;
}

function valDateRng(daterng)
{
	myOption = -1;
	
	for (i=0; i<daterng.length; i++) 
	{
		if (daterng[i].checked)
		{
			myOption = i;
		}
	}
	
	if (myOption == -1) 
	{
		alert("You must select a date range");return ' ';
	}
	
	return daterng[myOption].value;
}

function stripBlanks(fld)
{
	var result = "";
	var c;
	
	for (i=0; i<fld.length; i++) 
	{
		if (fld.charAt(i) != " " || c > 0) 
		{
			result += fld.charAt(i);
	
			if (fld.charAt(i) != " ") c = result.length;
		}
	}
	
	return result.substr(0,c);
}

var numb = '0123456789';
	
function isValid(parm,val) 
{
	if (parm == "") return true;
	
	for (i=0; i<parm.length; i++)
	{
		if (val.indexOf(parm.charAt(i),0) == -1)
		{
			return false;
		}	
	}
	
	return true;
}
	
function isNum(parm) 
{
	return isValid(parm,numb);
}

var mth = new Array('','january','february','march','april','may','june','july','august','september','october','november','december');
var day = new Array(31,28,31,30,31,30,31,31,30,31,30,31);

function validateDate(fld,fmt,rng) 
{
	var dd, mm, yy;
	
	var today = new Date;
	var t = new Date;
	
	fld = stripBlanks(fld);
	
	if (fld == '') return false;
	
	var d1 = fld.split('\/');
	
	if (d1.length != 3) d1 = fld.split(' ');
	
	if (d1.length != 3) return false;
	
	if (fmt == 'u' || fmt == 'U')
	{
	  dd = d1[1]; mm = d1[0]; yy = d1[2];
	}
	else if (fmt == 'j' || fmt == 'J') 
	{
	  dd = d1[2]; mm = d1[1]; yy = d1[0];
	}
	else if (fmt == 'w' || fmt == 'W')
	{
	  dd = d1[0]; mm = d1[1]; yy = d1[2];
	}
	else
	{
		return false;
	}
	
	var n = dd.lastIndexOf('st');
	
	if (n > -1) dd = dd.substr(0,n);
	
	n = dd.lastIndexOf('nd');
	
	if (n > -1) dd = dd.substr(0,n);
	
	n = dd.lastIndexOf('rd');
	
	if (n > -1) dd = dd.substr(0,n);
	
	n = dd.lastIndexOf('th');
	
	if (n > -1) dd = dd.substr(0,n);
	
	n = dd.lastIndexOf(',');
	
	if (n > -1) dd = dd.substr(0,n);
	
	n = mm.lastIndexOf(',');
	
	if (n > -1) mm = mm.substr(0,n);
	
	if (!isNum(dd)) return false;
	
	if (!isNum(yy)) return false;
	
	if (!isNum(mm))
	{
		var nn = mm.toLowerCase();
		 
		for (var i=1; i < 13; i++)
		{
			if (nn == mth[i] || nn == mth[i].substr(0,3)) 
			{
				mm = i; i = 13;
			}
		}
	}
	
	if (!isNum(mm)) return false;
	
	dd = parseFloat(dd); mm = parseFloat(mm); yy = parseFloat(yy);
	
	if (yy < 100) yy += 2000;
	
	if (yy < 1582 || yy > 4881) return false;
	
	if (mm == 2 && (yy%400 == 0 || (yy%4 == 0 && yy%100 != 0))) day[mm-1]++;
	
	if (mm < 1 || mm > 12) return false;
	
	if (dd < 1 || dd > day[mm-1]) return false;
	
	t.setDate(dd); t.setMonth(mm-1); t.setFullYear(yy);
	
	if (rng == 'p' || rng == 'P')
	{
		if (t > today) return false;
	}
	else if (rng == 'f' || rng == 'F')
	{
		if (t < today) return false;
	}
	else if (rng != 'a' && rng != 'A')
	{
		return false;
	}
	
	return true;
}