<!-- Start Javascript -->
function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = ""
}

/* Simple field checking form */
function checkPostCode ( form ) {
	
	/* Postcode check */
	if (form.NpostCode.value == " Enter your postcode" || form.NpostCode.value == "") {
	    alert( "Please enter a postcode to search on." );
	    form.NpostCode.focus();
	    return false ;
	}
	return true ;
	
}
//-->

<!-- popup windows -->
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

<!-- image rollover swap function -->
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_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_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_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];}
}

<!--  left hand nav menu switch -->
function SwitchMenu(obj){
	if(document.getElementById(obj)){
	var el = document.getElementById(obj);
	var ar = document.getElementById("cont").getElementsByTagName("DIV");
		if(el.style.display == "none"){
			for (var i=0; i<ar.length; i++){
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}

function SwitchMenu2(obj){
	if(document.getElementById(obj)){
	var el = document.getElementById(obj);
	var ar = document.getElementById("cont").getElementsByTagName("DIV");
		if(el.style.display == "none"){
			for (var i=1; i<ar.length; i++){
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}

document.onselectstart = new Function("return false");

<!-- Print function for frames -->
var da = (document.all) ? 1 : 0;
var pr = (window.print) ? 1 : 0;
var mac = (navigator.userAgent.indexOf("Mac") != -1); 

function printPage(frame, arg) {
  if (frame == window) {
    printThis();
  } else {
    link = arg; // a global variable 
    printFrame(frame);
  }
  return false;
}

function printThis() {
  if (pr) { // NS4, IE5
    window.print();
  } else if (da && !mac) { // IE4 (Windows)
    vbPrintPage();
  } else { // other browsers
    alert("Sorry, your browser doesn't support this feature.\n\nApple Mac Users please note:\n\n1.  Whilst holding down the 'control' key, click in an empty space on the page you want to print.\n\n2.  A menu will appear, select 'Open Page in New Window'.\n\n3.  To print press the browser print button.");
  }
}

function printFrame(frame) {
  if (pr && da) { // IE5
    frame.focus();
    window.print();
    link.focus();
  } else if (pr) { // NS4
    frame.print();
  } else if (da && !mac) { // IE4 (Windows)
    frame.focus();
    setTimeout("vbPrintPage(); link.focus();", 100);
  } else { // other browsers
    alert("Sorry, your browser doesn't support this feature.\n\nApple Mac Users please note:\n\n1.  Whilst holding down the 'control' key, click in an empty space on the page you want to print.\n    (Please ensure that you do not click on an image.)\n\n2.  A menu will appear, select 'Open Page in New Window'.\n\n3.  To print press the browser print button.");
  }
}

if (da && !pr && !mac) with (document) {
  writeln('<OBJECT ID="WB" WIDTH="0" HEIGHT="0" CLASSID="clsid:8856F961-340A-11D0-A96B-00C04FD705A2"></OBJECT>');
  writeln('<' + 'SCRIPT LANGUAGE="VBScript">');
  writeln('Sub window_onunload');
  writeln('  On Error Resume Next');
  writeln('  Set WB = nothing');
  writeln('End Sub');
  writeln('Sub vbPrintPage');
  writeln('  OLECMDID_PRINT = 6');
  writeln('  OLECMDEXECOPT_DONTPROMPTUSER = 2');
  writeln('  OLECMDEXECOPT_PROMPTUSER = 1');
  writeln('  On Error Resume Next');
  writeln('  WB.ExecWB OLECMDID_PRINT, OLECMDEXECOPT_DONTPROMPTUSER');
  writeln('End Sub');
  writeln('<' + '/SCRIPT>');
}
// -->