var xmlHttp;

function checkAddress(){
    var str=document.getElementById("09_email").value;
    if (str.length==0){
        document.getElementById("emailValid").innerHTML="<label>Enter email address</label>";
        document.getElementById("emailValid").style.display="inline";
         return true;
    }
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null){
        alert ("Your browser does not support AJAX!");
        return;
    }
    var url="https://secure.webage.co.uk/www.fishermanstacklecompany.co.uk/template/checkaddress.php";
    url=url+"?emailaddress="+str;
    xmlHttp.onreadystatechange=stateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}

function stateChanged(){
    if (xmlHttp.readyState==4){
        if(xmlHttp.responseText != "true"){
            document.getElementById("emailValid").innerHTML='<label>'+xmlHttp.responseText+'</label>';
            document.getElementById("emailValid").style.display="inline";
	     return true;
        }
        else{
            document.getElementById("emailValid").innerHTML="<label>Email address is valid</label>";
            document.getElementById("emailValid").style.display="inline";
	     return true;
        }
    }
}

function GetXmlHttpObject(){
    var xmlHttp=null;
    try{
      // Firefox, Opera 8.0+, Safari
      xmlHttp=new XMLHttpRequest();
    }
    catch (e){
  // Internet Explorer
        try{
          xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e){
            xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    return xmlHttp;
}

function showPaymentAlert(){
    var paymentChoice=document.getElementById("14_payment_method").value;
    if(paymentChoice == 'Cheque or Postal Order'){
        //alert('Your order will be placed on hold until the Cheque / Postal Order is received.');
	document.getElementById("chequeDetails").style.display='block';
        document.getElementById("creditCardDetails").style.display='none';
	document.getElementById("paypal").style.display='none';
        return true;
    }
    else if(paymentChoice == 'Credit or Debit Card'){
        //alert('Please complete the Credit / Debit card payment fields.');
	document.getElementById("chequeDetails").style.display='none';
        document.getElementById("creditCardDetails").style.display='block';
	document.getElementById("paypal").style.display='none';
        return true;
    }
     else if(paymentChoice == 'Paypal'){
        //alert('Please complete the Credit / Debit card payment fields.');
	document.getElementById("paypal").style.display='block';
	document.getElementById("chequeDetails").style.display='none';
        document.getElementById("creditCardDetails").style.display='none';
        return true;
    }
    else{
	document.getElementById("chequeDetails").style.display='none';
	document.getElementById("paypal").style.display='none';
        document.getElementById("creditCardDetails").style.display='block';
        return true;
    }
}


function compareAddress(){

    var email1=document.getElementById("09_email").value;
    var email2=document.getElementById("10_email").value;

    if (email2.length==0){
        document.getElementById("emailCompare").innerHTML="<label>Email addresses must match.</label>";
        document.getElementById("emailCompare").style.display="inline";
        return true;
    }

    if(email2 != email1){
        document.getElementById("emailCompare").innerHTML='<label>The email addresses do not match.</label>';
	document.getElementById("emailCompare").style.display="inline";
	 return true;
    }

    else{
        document.getElementById("emailCompare").style.display="inline";
        document.getElementById("emailCompare").innerHTML='<label>The email addresses match</label>';
	 return true;
    }
}

function toggleAlternativeDelivery(){
    var deliveryChoice=document.getElementById("13_alternativeDelivery").value;
    setShippingOptions();
    if(deliveryChoice == 'Alternative Delivery Address'){
        //alert('Your order will be placed on hold until the Cheque / Postal Order is received.');
	document.getElementById("alternativeDelivery").style.display='block';
        return true;
    }
    else if(deliveryChoice == 'Card Holder Address'){
        //alert('Please complete the Credit / Debit card payment fields.');
	document.getElementById("alternativeDelivery").style.display='none';
        return true;
    }
    else{
	document.getElementById("alternativeDelivery").style.display='none';
        return true;
    }
}

function prepareForm(){
    checkAddress();
    showPaymentAlert();
    compareAddress();
    toggleAlternativeDelivery();
    setShippingOptions();
}

function setShippingOptions(){
    var deliveryType=document.getElementById("13_alternativeDelivery").value;
    var shipping1=document.getElementById("06_country").value.split('|');
    var shipping2=document.getElementById("13f_country").value.split('|');
    var cardZone=shipping1[0];
    var altDelZone=shipping2[0];


    // check the delivery type
    // if card holder
    // use the cardholder country
    if(deliveryType == 'Card Holder Address'){
	if(cardZone == 'UK'){
	    document.getElementById("UK_Shipping").style.display='block';
	    document.getElementById("EU_Shipping").style.display='none';
	    document.getElementById("ROW_Shipping").style.display='none';
	     return true;
	}
	else if(cardZone == 'EU'){
	    document.getElementById("EU_Shipping").style.display='block';
	    document.getElementById("UK_Shipping").style.display='none';
	    document.getElementById("ROW_Shipping").style.display='none';
	     return true;
	}
	else if(cardZone == 'ROW'){
	    document.getElementById("ROW_Shipping").style.display='block';
	    document.getElementById("EU_Shipping").style.display='none';
	    document.getElementById("UK_Shipping").style.display='none';
	     return true;
	}
	else{
	    document.getElementById("UK_Shipping").style.display='block';
	    document.getElementById("EU_Shipping").style.display='none';
	    document.getElementById("ROW_Shipping").style.display='none';
	     return true;
	}
    }
    // if alternative
    // use the aletrnativ country
    else if(deliveryType == 'Alternative Delivery Address'){
	if(altDelZone == 'UK'){
	    document.getElementById("UK_Shipping").style.display='block';
	    document.getElementById("EU_Shipping").style.display='none';
	    document.getElementById("ROW_Shipping").style.display='none';
	     return true;
	}
	else if(altDelZone == 'EU'){
	    document.getElementById("EU_Shipping").style.display='block';
	    document.getElementById("UK_Shipping").style.display='none';
	    document.getElementById("ROW_Shipping").style.display='none';
	     return true;
	}
	else if(altDelZone == 'ROW'){
	    document.getElementById("ROW_Shipping").style.display='block';
	    document.getElementById("EU_Shipping").style.display='none';
	    document.getElementById("UK_Shipping").style.display='none';
	     return true;
	}
	else{
	    document.getElementById("UK_Shipping").style.display='block';
	    document.getElementById("EU_Shipping").style.display='none';
	    document.getElementById("ROW_Shipping").style.display='none';
	     return true;
	}
    }
    // else use the card holder
    else{
	    document.getElementById("UK_Shipping").style.display='block';
	    document.getElementById("EU_Shipping").style.display='none';
	    document.getElementById("ROW_Shipping").style.display='none';
	     return true;
    }
}


function openLargeImage(image, altImage){
    var preferredImage=new Image();
    var alternativeImage=new Image();

    // get the images.
    preferredImage.src=image;
    alternativeImage.src=altImage;

    // check the height of the image,
    alert('preferred image height='+preferredImage.height);
    alert('alternative image height='+alternativeImage.height);

}





/*  ajax for brands filter using checkbox*/
var xmlHttpProductFilter;

function filterProductsByBrandCheckbox(formId){
    var url="index.cgi?";
    var params="";

    var elem=document.getElementById(formId).elements;
    for(var i=0; i < elem.length; i++){
	if(elem[i].type=='checkbox'){
	    if(elem[i].checked==true){
		params+=elem[i].name+"="+elem[i].value+"&";
	    }
	}
	else{params+=elem[i].name+"="+elem[i].value+"&";}
    }

    xmlHttpProductFilter=GetXmlHttpObject();
    if (xmlHttpProductFilter==null){
        alert ("Your browser does not support AJAX!");
        return;
    }

    xmlHttpProductFilter.onreadystatechange=stateChangedProductFilter;
    url+=params;

    xmlHttpProductFilter.open("GET",url,true);
    xmlHttpProductFilter.send(null);
    xmlHttpProductFilter==null;


}


function stateChangedProductFilter(){
    if (xmlHttpProductFilter.readyState==4){
        if(xmlHttpProductFilter.responseText != false){
	    //alert(xmlHttpProductFilter.responseText);
	    document.getElementById('dynamicProductContainer').innerHTML=xmlHttpProductFilter.responseText;
	    hideIndicator();
        }
    }
     else if(xmlHttpProductFilter.readyState==3){
	displayIndicator();
    }

    else{
	hideIndicator();
    }
}

function updateBrands(checkBox){
    if(checkBox.checked == true){
	checkBox.className='brandEnabled';
	document.getElementById('brand_0_label').className='brandEnabled';
	disableBrandCheckboxes();
    }
    else{
	checkBox.className='brandDisabled';
	document.getElementById('brand_0_label').className='brandDisabled';
	enableBrandCheckboxes();
    }
    return false;
}

function disableBrandCheckboxes(){
    var brandCount=document.getElementById('brandCount').value;
    var checkBoxNodeId="";
    var labelNodeId="";
    for(var i=1; i < brandCount; i++){
	checkBoxNodeId="brand_"+i;
	labelNodeId="brand_"+i+"_label";
	document.getElementById(checkBoxNodeId).className="brandDisabled";
	document.getElementById(checkBoxNodeId).checked=false;
	document.getElementById(checkBoxNodeId).disabled=true;
	document.getElementById(labelNodeId).className="brandDisabled";
    }
     return false;
}

function enableBrandCheckboxes(){
    var brandCount=document.getElementById('brandCount').value;
    var checkBoxNodeId="";
    var labelNodeId="";
    for(var i=1; i < brandCount; i++){
	checkBoxNodeId="brand_"+i;
	labelNodeId="brand_"+i+"_label";
	document.getElementById(checkBoxNodeId).className="brandEnabled";
	document.getElementById(checkBoxNodeId).disabled=false;
	document.getElementById(labelNodeId).className="brandEnabled";
    }
     return false;
}

/* brand filter using select */
/*  ajax for brands filter using checkbox*/
var xmlHttpProductFilterSelect;

function filterProductsByBrandSelect(formId){
    var url="index.cgi?";
    var params="";

    var elem=document.getElementById(formId).elements;
    for(var i=0; i < elem.length; i++){
	params+=elem[i].name+"="+elem[i].value+"&";
    }

    xmlHttpProductFilterSelect=GetXmlHttpObject();
    if (xmlHttpProductFilterSelect==null){
        alert ("Your browser does not support AJAX!");
        return;
    }

    xmlHttpProductFilterSelect.onreadystatechange=stateChangedProductFilterSelect;
    url+=params;

    xmlHttpProductFilterSelect.open("GET",url,true);
    xmlHttpProductFilterSelect.send(null);
    xmlHttpProductFilterSelect==null;
}


function stateChangedProductFilterSelect(){
    if (xmlHttpProductFilterSelect.readyState==4){
        if(xmlHttpProductFilterSelect.responseText != false){
	    //alert(xmlHttpProductFilter.responseText);
	    document.getElementById('dynamicProductContainer').innerHTML=xmlHttpProductFilterSelect.responseText;
	    hideIndicator();
        }
    }

    else if(xmlHttpProductFilterSelect.readyState==1
	    || xmlHttpProductFilterSelect.readyState==2
	    || xmlHttpProductFilterSelect.readyState==3){
	    displayIndicator();
    }

    else{
	hideIndicator();
    }
    return false;
}


/* pagination links using brand filters*/
/* brand filter using select */
/*  ajax for brands filter using checkbox*/
var xmlHttpProductFilterLink;

function filterProductsByBrandLink(a){
    var url=a;
    var params="";


    xmlHttpProductFilterLink=GetXmlHttpObject();
    if (xmlHttpProductFilterLink==null){
        alert ("Your browser does not support AJAX!");
        return;
    }

    xmlHttpProductFilterLink.onreadystatechange=stateChangedProductFilterLink;
    xmlHttpProductFilterLink.open("GET",url,true);
    xmlHttpProductFilterLink.send(null);
    xmlHttpProductFilterLink==null;
}


function stateChangedProductFilterLink(){
    if (xmlHttpProductFilterLink.readyState==4){
        if(xmlHttpProductFilterLink.responseText != false){
	    //alert(xmlHttpProductFilter.responseText);
	    document.getElementById('dynamicProductContainer').innerHTML=xmlHttpProductFilterLink.responseText;
	    hideIndicator();
        }
    }
    else if(xmlHttpProductFilterLink.readyState==1
	    || xmlHttpProductFilterLink.readyState==2
	    || xmlHttpProductFilterLink.readyState==3){
	displayIndicator();
    }

    else{
	hideIndicator();
    }
}

function displayIndicator(){
    var imgT=document.getElementById('filterLoaderTop').src='template/images/filterLoaderTop.gif';
    var imgB=document.getElementById('filterLoaderBottom').src='template/images/filterLoaderRight.gif';

}

function hideIndicator(){
    var imgT=document.getElementById('filterLoaderTop').src='template/images/nofilterloader.gif';
     var imgB=document.getElementById('filterLoaderBottom').src='template/images/nofilterloader.gif';
}