function waxOff() { //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_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 waxOn() { //v3.0
  var i,j=0,x,a=waxOn.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 popupwin(pagesrc) {
   window.open(pagesrc,'popup','width=581,height=319,resizable=no,scrollbars=no,menubar=no,toolbar=no,directories=no,location=no,status=no,scrolling=no,top=50,left=50')// Open external file (parameter) in a new custom window
}	
////////
var origWidth, origHeight;
if (document.layers) {
	origWidth = window.innerWidth; origHeight = window.innerHeight;
	window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}

var cur_lyr;	// holds id of currently visible layer
function swapLayers(id) {
  if (cur_lyr) hideLayer(cur_lyr);
  showLayer(id);
  cur_lyr = id;
}

function showLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "visible";
}

function hideLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "hidden";
}

function getElemRefs(id) {
	var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? document.layers[id]: null;
	if (el) el.css = (el.style)? el.style: el;
	return el;
}
/////////////
function isEmail(str) {
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}

function validate_contact(f) {

  var cromulent = true;
  var msg = "The following error(s) occurred:\n";

  var e,v;

  e = f.elements["name"]; v = e.value;
  if (!v.length) {
	msg += " - Name is required\n";
	cromulent = false;
  }

  e = f.elements["phonebh"]; v = e.value;
  if (!v.length) {
	msg += " - Phone number is required\n";
	cromulent = false;
  }
  
  e = f.elements["email"]; v = e.value;
  if (!v.length) {
	msg += " - Email is required\n";
	cromulent = false;
  }

  e = f.elements["email"]; v = e.value;
  if (v.length && !isEmail(v)) {
	msg += " - Email requires a valid email address\n";
	cromulent = false;
  }
  
  e = f.elements["enquiry"]; v = e.value;
  if (!v.length) {
	msg += " - Enquiry is required\n";
	cromulent = false;
  }

				
  if (!cromulent) { alert(msg); }
				
  return cromulent;

}