function popup() {
	win = window.open("terms.html","terms","width=612,height=450,scrollbars=yes");
}

function updatepage(t,phrase) {
	cms_iframe.document.forms['cmsform'].phrase_name.value=phrase;
	cms_iframe.document.forms['cmsform'].phrase_value.value=t.innerHTML;
	cms_iframe.document.forms['cmsform'].submit();
}

function toPoundsAndPennies(n) {
  var s = "" + Math.round(n * 100) / 100
  var i = s.indexOf('.')
  if (i < 0) return s + ".00"
  var t = s.substring(0, i + 1) + s.substring(i + 1, i + 3)
  if (i + 2 == s.length) t += "0"
  return t
}

function recalculate() {
	var total = 0;
	var quant = 0;
	var message = "";

	tags = document.getElementsByTagName('select');
	for(i=0;i<tags.length;i++) {
		if(tags[i].name !="shipping") {
			total = parseFloat(total) + parseFloat(tags[i][tags[i].selectedIndex].value);
			document.forms[0][tags[i].name.replace("v","q")].value = tags[i][tags[i].selectedIndex].text;
		}
	}

	for(i=0;i<tags.length;i++) {
		if(tags[i].name !="shipping") {
			quant = parseFloat(quant) + parseFloat(tags[i][tags[i].selectedIndex].text);
		}
	}

	if(quant >=2 && quant <= 5) {
		total = total - (total * 0.1);
		message = " (10% discount)";
	}

	if(quant >= 6 && quant <= 10) {
		total = total - (total * 0.2);
		message = " (20% discount)";
	}

	subtotal = parseFloat(total);

	total = parseFloat(total) + parseFloat(document.forms[0].shipping[document.forms[0].shipping.selectedIndex].value);

	document.getElementById('totalcost').innerHTML = toPoundsAndPennies(total) + message;
	document.getElementById('subcost').innerHTML = toPoundsAndPennies(subtotal);
	document.forms[0].total.value = toPoundsAndPennies(total) + message;
}

function check_email(e) {
	validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;

	if (e.search(validRegExp) == -1) {
		return false;
	} else {
		return true;
	}
} 

function checkform() {
	if(document.forms[0].name.value=="") {
		alert("You must fill in your name");
		return false;
	}

	if(!check_email(document.forms[0].email.value)) {
		alert("You must fill in a valid email address");
		return false;
	}
	if(document.forms[0].company.value=="") {
		alert("You must fill in your company");
		return false;
	}
	if(document.forms[0].address.value=="") {
		alert("You must fill in your address");
		return false;
	}
	if(document.forms[0].city.value=="") {
		alert("You must fill in your city");
		return false;
	}
	if(document.forms[0].postcode.value=="") {
		alert("You must fill in your postcode");
		return false;
	}
	if(document.forms[0].country.value=="") {
		alert("You must fill in your country");
		return false;
	}
	if(document.forms[0].phone.value=="") {
		alert("You must fill in your phone number");
		return false;
	}
	document.forms[0].submit();
}

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];}
}