// JavaScript Document

function showDiv(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementsByTagName("div"); //DynamicDrive.com change
		if(el.style.display != "block"){ //DynamicDrive.com change
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="subnavclass") //DynamicDrive.com change
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}

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

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];}
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function evaswap(obj, val){
  obj.src = val;
}

function clearVoucher(){
  document.cart.voucher.value = '';
}

function clearComp(){
  document.comp.email.value = '';
}

function clearCompHome(){
  document.comphome.email.value = '';
}

function check_search(form) 
{					
	if (form.keywords.value == ''){
		alert("Please enter your keywords...");
		form.keywords.focus();
		return false;
	}
}

function check_email(form) 
{
var emailFilter=/^.+@.+\..{2,3}$/;
var illegalChars= /[\(\)\<\>\,\;\:\\\/\"\[\]]/;
var re = /\s/;									
	if (form.email.value=="" || form.email.value.match(illegalChars) || !(emailFilter.test(form.email.value))){
		alert("Please enter a valid email address...");
		form.email.focus();
		return false;
	}									
}

function check_ask(form) 
{
var emailFilter=/^.+@.+\..{2,3}$/;
var illegalChars= /[\(\)\<\>\,\;\:\\\/\"\[\]]/;
var re = /\s/;									
	if (form.name.value == ''){
		alert("Please enter your name...");
		form.name.focus();
		return false;
	}
	if (form.email.value=="" || form.email.value.match(illegalChars) || !(emailFilter.test(form.email.value))){
		alert("Please enter a valid email address...");
		form.email.focus();
		return false;
	}
	if (form.question_type.value == ''){
		alert("Please choose your question type...");
		form.question_type.focus();
		return false;
	}
	if (form.comments.value == ''){
		alert("Please enter your enquiry/comments...");
		form.comments.focus();
		return false;
	}
	if (form.hear_about.value == ''){
		alert("Please tell us how you heard about us...");
		form.hear_about.focus();
		return false;
	}
}

function check_checkout(form) 
{
var emailFilter=/^.+@.+\..{2,3}$/;
var illegalChars= /[\(\)\<\>\,\;\:\\\/\"\[\]]/;
var re = /\s/;									
	if (form.billingLastName.value == ''){
		alert("Please enter your surname...");
		form.billingLastName.focus();
		return false;
	}								
	if (form.billingFirstName.value == ''){
		alert("Please enter your forename...");
		form.billingFirstName.focus();
		return false;
	}
	if (form.billingAddress1.value == ''){
		alert("Please enter your billing address...");
		form.billingAddress1.focus();
		return false;
	}
	if (form.billingCity.value == ''){
		alert("Please enter your billing city...");
		form.billingCity.focus();
		return false;
	}
	if (form.billingCounty.value == ''){
		alert("Please enter your billing county...");
		form.billingCounty.focus();
		return false;
	}
	if (form.billingPostcode.value == ''){
		alert("Please enter your billing post code...");
		form.billingPostcode.focus();
		return false;
	}
	var stripped = form.billingTelephone.value.replace(/[\(\)\.\-\ ]/g, '');
	if (form.billingTelephone.value=='' || isNaN(parseInt(stripped))) {
		alert("Your telephone number is incomplete or contain invalid characters...");
		form.billingTelephone.focus();
		return false;
	}
	if (form.billingEmail.value=="" || form.billingEmail.value.match(illegalChars) || !(emailFilter.test(form.billingEmail.value))){
		alert("Please enter a valid email address...");
		form.billingEmail.focus();
		return false;
	}
	if (form.hear_about.value == ''){
		alert("Please tell us how you heard about us...");
		form.hear_about.focus();
		return false;
	}
	if (form.deliveryLastName.value == ''){
		alert("Please enter your surname...");
		form.deliveryLastName.focus();
		return false;
	}	
	if (form.deliveryFirstName.value == ''){
		alert("Please enter your forename...");
		form.deliveryFirstName.focus();
		return false;
	}																
	if (form.deliveryAddress1.value == ''){
		alert("Please enter your shipping address...");
		form.deliveryAddress1.focus();
		return false;
	}
	if (form.deliveryCity.value == ''){
		alert("Please enter your shipping city...");
		form.deliveryCity.focus();
		return false;
	}
	if (form.deliveryCounty.value == ''){
		alert("Please enter your shipping county...");
		form.deliveryCounty.focus();
		return false;
	}
	if (form.deliveryPostcode.value == ''){
		alert("Please enter your shipping post code...");
		form.deliveryPostcode.focus();
		return false;
	}
	if (form.optin.checked != true){
		alert("Please read our terms & conditions");
		form.optin.focus();
		return false;
	}
}

function singleSubmit(trgForm)
{
    trgForm.submitButton.disabled = true;
    trgForm.resetButton.disabled = true;
}

function toggleBillingInfo(trgForm)
{
    if (trgForm.SubmitBilling.checked == true)
    {
        trgForm.deliveryFirstName.value = trgForm.billingFirstName.value ;
        trgForm.deliveryLastName.value = trgForm.billingLastName.value ;
        trgForm.deliveryAddress1.value = trgForm.billingAddress1.value ;
        trgForm.deliveryAddress2.value = trgForm.billingAddress2.value ;
        trgForm.deliveryCity.value =  trgForm.billingCity.value ;
		trgForm.deliveryCounty.value =  trgForm.billingCounty.value ;
        trgForm.deliveryPostcode.value = trgForm.billingPostcode.value ;
    }
    else
    {
        trgForm.deliveryFirstName.value = "";
        trgForm.deliveryLastName.value = "";
        trgForm.deliveryAddress1.value = "";
        trgForm.deliveryAddress2.value = "";
        trgForm.deliveryCity.value = "";
		trgForm.deliveryCounty.value = "";
        trgForm.deliveryPostcode.value = "";
    }
}

function resetDynamicFields()
{
	document.cpiForm.OrderId.value=Math.round(Math.random()*10000000000);
	document.cpiForm.TimeStamp.value=new Date().valueOf();
}