function positionWindow(width, height)
{    
    var screenWidth = screen.width; //determines screen width
    var screenHeight = screen.height; //determines screen height
    
	xpos = (screenWidth - width)/2;
    ypos = (screenHeight - height)/2;
    window.moveTo(xpos,ypos);  
    window.resizeTo(width,height);
}


//addEvent() by John Resig
function addEvent( obj, type, fn ){ 
   if (obj.addEventListener){ 
      obj.addEventListener( type, fn, false );
   }
   else if (obj.attachEvent){ 
      obj["e"+type+fn] = fn; 
      obj[type+fn] = function(){ obj["e"+type+fn]( window.event ); } 
      obj.attachEvent( "on"+type, obj[type+fn] ); 
   } 
}


function preloadImages() 
{
if (document.images) {
var imgsrc = preloadImages.arguments;
arr=new Array(imgsrc.length);
for (var j=0; j<imgsrc.length; j++) {
arr[j] = new Image;
arr[j].src = imgsrc[j];
}
}
}

function validate(formName)
{
var flag = true;
var alertMsg = "";
f = eval('document.'+formName);

//radioSetsArray = parseForm(formName);

for(i=0; i<f.elements.length; i++)
{
var formElement = f.elements[i];
if (formElement.getAttribute("pattern") != null)
{
var pattern = formElement.getAttribute("pattern");
var newRegExp = new RegExp(pattern, "i");
if(formElement.value.search(newRegExp) == -1)
{ 
flag = false;
if (formElement.getAttribute("alert") != null)
{
alertMsg += formElement.getAttribute("fieldname") + formElement.getAttribute("alert") + "\n\r";

}
}
}

if (formElement.getAttribute("required") == "yes")
{
if(formElement.type == "radio")
{
radiobuttonName = formElement.getAttribute('name');
var requiredRadioChecked = false;
for(k=0; k<radioSetsArray.length; k++)
{
for(l=0; l<radioSetsArray[k].length; l++)
{
if(radioSetsArray[k][l].getAttribute('name') == radiobuttonName && radioSetsArray[k][l].checked)
{
requiredRadioChecked = true;
}
}
}

if(!requiredRadioChecked)
{
flag = false;
if(alertMsg.indexOf(formElement.getAttribute('fieldname')) == -1)
{
alertMsg += formElement.getAttribute("fieldname") + " - Required field" + "\n\r";
}
}
}
if ((formElement.value == "" && (formElement.tagName == "INPUT" || formElement.tagName == "TEXTAREA")) || formElement.selectedIndex == 0)
{
flag = false;
alertMsg += formElement.getAttribute("fieldname") + " - Required field" + "\n\r"
}
}
}

var password = document.getElementById('password');
var confirmPassword = document.getElementById('confirmPassword');
if (password && confirmPassword)
{
if(password.value != confirmPassword.value && password.value != "" && confirmPassword.value != "")
{
flag = false;
alertMsg += password.getAttribute('fieldname') + " and " + confirmPassword.getAttribute('fieldname') + " are different \n\r"
}
}

if (!flag)
{
alert(alertMsg);
return false;
}
else
{
return true;
}
}



/* Reference Article:
Dustin Diaz:
http://www.dustindiaz.com/top-ten-javascript/
*/

/* addEvent: simplified event attachment */
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}
	
var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);

/* window 'load' attachment */
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

/* grab Elements from the DOM by className */
function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

/* toggle an element's display */
function toggle(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
}

/* insert an element after a particular node */
function insertAfter(parent, node, referenceNode) {
	parent.insertBefore(node, referenceNode.nextSibling);
}

/* Array prototype, matches value in array: returns bool */
Array.prototype.inArray = function (value) {
	var i;
	for (i=0; i < this.length; i++) {
		if (this[i] === value) {
			return true;
		}
	}
	return false;
};

/* get, set, and delete cookies */
function getCookie( name ) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ";", len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}
	
function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+"="+escape( value ) +
		( ( expires ) ? ";expires="+expires_date.toGMTString() : "" ) + //expires.toGMTString()
		( ( path ) ? ";path=" + path : "" ) +
		( ( domain ) ? ";domain=" + domain : "" ) +
		( ( secure ) ? ";secure" : "" );
}
	
function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + "=" +
			( ( path ) ? ";path=" + path : "") +
			( ( domain ) ? ";domain=" + domain : "" ) +
			";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

/* quick getElement reference */
function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}