/********************************************************************************
* Name: ConfirmDelete
* Description: Double check if item is indeed to be deleted
* Input: none
* Output: none
*/
function ConfirmDelete()
{
	var answer = confirm("Are you sure you want to delete this item?");
	if (!answer)
		event.returnValue = false;
}
/********************************************************************************
* Name: Confirm
* Description: Multi use confirm box
* Input: none
* Output: none
*/
function Confirm(text)
{
	var answer = confirm(text);
	if (!answer)
		event.returnValue = false;
}

/********************************************************************************
* Name: getObjectID
* Description: Get the ID of the object to be manipulated
* Input: tag name
* Output: element name
*/
function getObjectID(tagName)
{
	var elem = null;
	if(document.getElementById)
	{
		elem = document.getElementById(tagName);
	} 
	else if (document.all)
	{
		var elem = document.all[tagName];
	}
	return elem;
}

/********************************************************************************
* Name: changeStyle
* Description: Change the class of an object
* Input: tag name, new class name
* Output: none
*/
function changeClass(tagName, newClass)
{
	var elem = null;
	elem = getObjectID(tagName);
	elem.className = newClass;	
}

/********************************************************************************
* Name: displayObject
* Description: Display or Hide the object
* Input: tag name, true for display & false for hide
* Output: none
*/
function displayObject(tagName, show)
{
	var elem = null;
	var display = "none";
	
	elem = getObjectID(tagName);
	if (show)
		display = "";
	elem.style.display = display;
}
/********************************************************************************
* Name: clearAll
* Description: clear all the display
* Input: form (elements)
* Output: none
********************************************************************************/
function clearAll(form)
{
	for (var i =0; i < form.elements.length; i++)
	{
		if (form.elements[i].noclear == null)
		{
			if (form.elements[i].type == "text")
				form.elements[i].value = "";
			else if (form.elements[i].type == "textarea")
				form.elements[i].value = "";
			else if (form.elements[i].type == "select-one")
				form.elements[i].selectedIndex = 0;
		}
	}
}
/********************************************************************************
* Name: CheckEmail
* Description: check validity of email address
* Input: email
* Output: boolean - true or false
********************************************************************************/

/**
* DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
*/
function CheckEmail(email)
{
	var at="@";
	var dot=".";
	var lat=email.indexOf(at);
	var lstr=email.length;
	var ldot=email.indexOf(dot);
	if (email.indexOf(at)==-1){
		return false;
	}

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

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

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

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

	if (email.indexOf(dot,(lat+2))==-1){
	return false;
	}

	if (email.indexOf(" ")!=-1){
	return false;
	}

 	return true;
}
/*******************************************************************************
* Name:	DisplayMax
* Description: Open a new window in a maximize form
* Input : url of the web page
* Output : none
*******************************************************************************/
var _PopupMax;
function DisplayMax(url, name)
{
	_PopupMax=window.open(url, name, 'menubar=no, resizable=yes, scrollbars=yes, toolbar=no, location=no');
	_PopupMax.resizeTo(screen.availWidth, screen.availHeight);
	_PopupMax.moveTo(0,0);	
	_PopupMax.focus();	
}
/********************************************************************************
DHTML date validation script for dd/mm/yyyy. Courtesy of SmartWebby.com
(http://www.smartwebby.com/dhtml/)
* Name: ConfirmDelete
* Description: Double check if item is indeed to be deleted
* Input: none
* Output: none
********************************************************************************/
// Declaring valid date character, minimum year and maximum year

var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        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
}
/********************************************************************************
* Name: RefreshParent
* Description: Refreshes the parent window
* Input: none
* Output: none
*/
function RefreshParent()
	{
		var parentWin = window.opener;
		if (parentWin != null)
			parentWin.location.href = parentWin.location.href;
	}