<!-- Popup and Form validation code --->

function checkCart(inQty){
	if(inQty < 1){
		alert("You must have at least 1 item in your cart.");
		return false;
	}
	return true;
}

function goToCategory(inURL){
	document.location = inURL;
}

function NewWindow(mypage, myname, w, h, scroll) {
	
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+''
	win = window.open(mypage, myname, winprops)
	
	if (parseInt(navigator.appVersion) >= 4) {
		win.window.focus();
	}
}

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_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];}
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function checkCheckout(form) {
	if (form.Name.value.length<3)	{
		form.Name.focus(); alert("Please enter your Name");	return(false);
	}
	
	if (form.Email.value=="") {
		form.Email.focus(); alert("Please enter your Email address"); return(false);
	}

	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(form.Email.value)){
	}	else {
		form.Email.focus();
		alert("You have entered an invalid Email address.");
		return (false)
	}
	
	if (form.Address.value.length<3)	{
		form.Address.focus(); alert("Please enter your Address");	return(false);
	}
	
	if (form.Town.value.length<3)	{
		form.Town.focus(); alert("Please enter your Town / City");	return(false);
	}
	
	if (form.County.value.length<3)	{
		form.County.focus(); alert("Please enter your County");	return(false);
	}
	
	if (form.Postcode.value.length<7)	{
		form.Postcode.focus(); alert("Please enter your Postcode");	return(false);
	}
	
	if (form.Telephone.value.length<7)	{
		form.Telephone.focus(); alert("Please enter your Telephone number");	return(false);
	}
	
	if (form.different.checked && form.Delivery.value.length<5)	{
		form.Delivery.focus(); alert("Please enter your Delivery Address");	return(false);
	}
}