// JavaScript Document
///////////////////////////////////////////////////////////////////////////////////////////////
function type_test() {
	// set variable for opage tests
	var address = 'http://www.holtmodelrailways.co.uk/';
	var type = document.type.product_type.value;
	var company = '';
	
	var gauge = document.type.gauge.value;
	if (gauge == '00') {var gauge_page ='00';} 
	if (gauge == 'n') {var gauge_page ='n';}
	if (gauge == 'O') {var gauge_page ='0';}
	
	// Start tests
	if(document.type.product_type.value == 0){
		alert('The item you have choosen is not valid, please try another');
		document.type.product_type.selectedIndex = 0;
	}
	else{
		window.location.href = address + 'choose_' + gauge_page + '.php?gauge=' + gauge + '&product_type=' + type + '&company=' + company;
	}
}
///////////////////////////////////////////////////////////////////////////////////////////////
// open the window for the cart
function additem(val){
	var url = 'https://www.lgogroup.net/www.holtmodelrailways.co.uk/smallcart.php?action=add&productcode=' + document.forms[val].productcode.value + '&qty=' + document.forms[val].qty.value;
	window.open(url,'','width=200,height=100');
}

///////////////////////////////////////////////////////////////////////////////////////////////
function company_change() {
	// set variable for opage tests
	var address = 'http://www.holtmodelrailways.co.uk/';
	var type = document.type.product_type.value;
	var company = document.type.company.value;
	
	var gauge = document.type.gauge.value;
	if (gauge == '00') {var gauge_page ='00';} 
	if (gauge == 'n') {var gauge_page ='n';}
	if (gauge == 'O') {var gauge_page ='O';}
	
	// change page
	window.location.href = address + 'choose_' + gauge_page + '.php?gauge=' + gauge + '&product_type=' + type + '&company=' + company;
}
///////////////////////////////////////////////////////////////////////////////////////////////
function iclass_change() {
	// set variable for opage tests
	var address = 'http://www.holtmodelrailways.co.uk/';
	var type = document.type.product_type.value;
	var company = document.type.company.value;
	var iclass = document.type.iclass.value;
	
	var gauge = document.type.gauge.value;
	if (gauge == '00') {var gauge_page ='00';} 
	if (gauge == 'n') {var gauge_page ='n';}
	if (gauge == 'O') {var gauge_page ='O';}
	
	// change page
	window.location.href = address + 'choose_' + gauge_page + '.php?gauge=' + gauge + '&product_type=' + type + '&company=' + company + '&iclass=' + iclass;
}

///////////////////////////////////////////////////////////////////////////////////////////////
function change_menu_type(){
		for (var counter = 0; counter < document.type.product_type.length; counter++){
			if (document.type.product_type.options[counter].value == document.type.lproduct_type.value){
				document.type.product_type.selectedIndex = counter;
			}
		}
}
///////////////////////////////////////////////////////////////////////////////////////////////
function change_menu_company(){
	if (!document.type.company){}
	else{
		for (var counter = 0; counter < document.type.company.length; counter++){
			if (document.type.company.options[counter].value == document.type.lcompany.value){
				document.type.company.selectedIndex = counter;
			}
		}
	}
}
///////////////////////////////////////////////////////////////////////////////////////////////
function change_menu_iclass(){
	if (!document.type.iclass){}
	else{
		for (var counter = 0; counter < document.type.iclass.length; counter++){
			if (document.type.iclass.options[counter].value == document.type.liclass.value){
				document.type.iclass.selectedIndex = counter;
			}
		}
	}
}
///////////////////////////////////////////////////////////////////////////////////////////////
function postage_change(){
	
	if(document.cart.postage[0].checked) {
		document.cart.postagedis.value = document.cart.postage[0].value;
		//document.cart.total.value = (parseFloat(document.cart.postage[0].value) + parseFloat(document.cart.calctotal.value));		
		document.cart.total.value = ((Math.round((parseFloat(document.cart.postage[0].value) + parseFloat(document.cart.calctotal.value)) * 100))/100 );
	}
		if(document.cart.postage[1].checked) {
		document.cart.postagedis.value = document.cart.postage[1].value;
		//document.cart.total.value = (parseFloat(document.cart.postage[1].value) + parseFloat(document.cart.calctotal.value));		
		document.cart.total.value = ((Math.round((parseFloat(document.cart.postage[1].value) + parseFloat(document.cart.calctotal.value)) * 100))/100);		
		}

}
///////////////////////////////////////////////////////////////////////////////////////////////