function spawn(URL) {
	var newWindow = window.open(URL,'newWindow','width=450,height=463, directories=no,location=no,menubar=no,scrollbars=yes,toolbar=no,status=no,resizable=no,top=150,left=300');
	}
function MM_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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function mOvr(src,clrOver)
	{ if (!src.contains(event.fromElement)) { src.style.cursor = 'hand'; src.bgColor = clrOver; }
}
function mOut(src,clrIn)
	{ if (!src.contains(event.toElement)) { src.style.cursor = 'default'; src.bgColor = clrIn; }
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function centrePopup(theURL,winName,width,height,features) {
    var cTop = (screen.availHeight/2) - (height/2);
    var cLeft = (screen.availWidth/2) - (width/2);
    window.open(theURL,winName,'width='+width+',height='+height+',top='+cTop+',left='+cLeft+features);
}

function WinOpen(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

//keeps out of frames
if (top.location != self.location) {
top.location = self.location
}
//if low resolution ...
if (screen.width <= 640 || screen.height <= 480) {
document.write('<style type="text/css" media="screen">body {padding:0px;margin:0px}#width{width: 100%}#topNav li a, #topNav li a:visited {padding: 5px 3px 5px 3px}</style>');
}
//clears search field
function clearfield(FieldObject,defaultValue)
{
	originalValue = FieldObject.value;
	if(originalValue == "" || originalValue == defaultValue)
	{FieldObject.value = '';}
	return true;
}
function leavefield(FieldObject,defaultValue)
{
	FieldValue = FieldObject.value;
	if(FieldValue == '')
	{FieldObject.value = defaultValue;	}
}

//if (navigator.appName == "Microsoft Internet Explorer"){
//document.write('<!--[if IE]><style type="text/css" media="screen"></style><![endif]-->');
//}
//<!--[if IE]><![endif]--> = quick way of keeping Opera out of IE styles

function showLayer(strLayerID){
	var oAlertLayer = document.getElementById(strLayerID)
	if(oAlertLayer){
		oAlertLayer.style.display = 'block';
	}
}

function hideLayer(strLayerID){
	var oAlertLayer = document.getElementById(strLayerID)
	if(oAlertLayer){
		oAlertLayer.style.display = 'none';
	}
}

function changeLayerClass(strLayerID,strClassName){
	var oAlertLayer = document.getElementById(strLayerID)
	if(oAlertLayer){
		oAlertLayer.className = strClassName;
	}
}

function changeLayerOverflow(strLayerID){
	var oAlertLayer = document.getElementById(strLayerID)
	if(oAlertLayer){
		oAlertLayer.style.overflow = hidden;
	}
}

function calcDocHeight(){
	var intHeight =  document.body.clientHeight;
	document.write(intHeight);
	alert(intHeight);
}

function validate_signup(frm) {
	var isError = false;
	
	if (document.getElementById('cd_FirstName').value == "") {
		document.getElementById('firstname_error').innerHTML = '&nbsp;&nbsp;Please enter your first name';
		isError = true;
	} else {
		document.getElementById('firstname_error').innerHTML = '';
	}

	if (document.getElementById('cd_LASTNAME').value == "") {
		document.getElementById('surname_error').innerHTML = '&nbsp;&nbsp;Please enter your surname';
		isError = true;
	} else {
		document.getElementById('surname_error').innerHTML = '';
	}
	
	if (document.getElementById('Email').value.search(/^[\w-\.']+@([\w-]+\.)+[\w-]{2,4}$/)) {
		document.getElementById('email_error').innerHTML = '&nbsp;&nbsp;Please enter a valid email address';
		isError = true;
	} else {
		document.getElementById('email_error').innerHTML = '';
	}

	if (document.getElementById('cd_HOUSENUMBER').value == "") {
		document.getElementById('house_error').innerHTML = '&nbsp;&nbsp;Please enter your house name/number';
		isError = true;
	} else {
		document.getElementById('house_error').innerHTML = '';
	}

	if (document.getElementById('cd_POSTCODE').value == "") {
		document.getElementById('postcode_error').innerHTML = '&nbsp;&nbsp;Please enter your postcode';
		isError = true;
	} else {
		document.getElementById('postcode_error').innerHTML = '';
	}

	return !isError;
}


function validate_forward(frm) {
	var isError = false;
	
	if (document.getElementById('myName').value == "") {
		document.getElementById('myName_error').innerHTML = '&nbsp;&nbsp;Required';
		isError = true;
	} else {
		document.getElementById('myName_error').innerHTML = '';
	}
	
	if (document.getElementById('myEmail').value.search(/^[\w-\.']+@([\w-]+\.)+[\w-]{2,4}$/)) {
		document.getElementById('myEmail_error').innerHTML = '&nbsp;&nbsp;Invalid address';
		isError = true;
	} else {
		document.getElementById('myEmail_error').innerHTML = '';
	}
	
	if (document.getElementById('friendName').value == "") {
		document.getElementById('friendName_error').innerHTML = '&nbsp;&nbsp;Required';
		isError = true;
	} else {
		document.getElementById('friendName_error').innerHTML = '';
	}
	
	if (document.getElementById('friendEmail').value.search(/^[\w-\.']+@([\w-]+\.)+[\w-]{2,4}$/)) {
		document.getElementById('friendEmail_error').innerHTML = '&nbsp;&nbsp;Invalid address';
		isError = true;
	} else {
		document.getElementById('friendEmail_error').innerHTML = '';
	}

	return !isError;
}

//function calcDocHeight(){
//	var intHeight =  document.body.clientHeight;
//	var intWindowHeight = window.innerHeight;
//	alert('intHeight: ' + intHeight + ' intWindowHeight: ' + intWindowHeight);
//	document.getElementById('coverbg').style.height = intWindowHeight + 'px';
//}

function calcDocHeight(){
  	var myWidth = 0, myHeight = 0;
  	if( typeof( window.innerWidth ) == 'number' ) {
    	//Non-IE
    	myWidth = window.innerWidth;
   	 	myHeight = window.innerHeight;
  	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
   		//IE 6+ in 'standards compliant mode'
    	myWidth = document.documentElement.clientWidth;
    	myHeight = document.documentElement.clientHeight;
  	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    	//IE 4 compatible
    	myWidth = document.body.clientWidth;
    	myHeight = document.body.clientHeight;
  	}
	var intWindowHeight = document.body.clientHeight;
  	if (intWindowHeight > myHeight){
  		document.getElementById('coverbg').style.height = intWindowHeight + 'px';
  	} else {
  		document.getElementById('coverbg').style.height = myHeight + 'px';
  	}
}



//Validate contact us form
function validateContact(frm) {
	var isError = false;
	
	if (document.getElementById('firstName').value == "") {
		document.getElementById('firstName_error').innerHTML = " - Required";
		isError = true;
	} else {
		document.getElementById('firstName_error').innerHTML = "";
	}
	
	if (document.getElementById('Surname').value == "") {
		document.getElementById('Surname_error').innerHTML = " - Required";
		isError = true;
	} else {
		document.getElementById('Surname_error').innerHTML = "";
	}
	
	if (document.getElementById('Email').value.search(/^[\w-\.']+@([\w-]+\.)+[\w-]{2,4}$/)) {
		document.getElementById('Email_error').innerHTML = " - Valid email required";
		isError = true;
	} else {
		document.getElementById('Email_error').innerHTML = "";
	}
	
    if (isError) {
		return false;
    } else {
        return true;
    }
}