function myopen(filename,windowname,properties)

	{

	mywindow = window.open(filename,windowname,properties);

	}



function getXMLHTTPRequest()

	{

	var request = false;



	if (window.XMLHttpRequest)

		{

		request = new XMLHttpRequest();

		}

	else

		{

		if (window.ActiveXObject)

			{

			try

				{

				request = new ActiveXObject("Msml2.XMLHTTP");

				}

			catch (err1)

				{

				try

					{

					request = new ActiveXObject("Microsoft.XMLHTTP");

					}

				catch (err2)

					{

					request = false;

					}

				}

			}

		}



	return request;

	}



var myRequest = getXMLHTTPRequest();



function getMethod(myurl, query, div_name)

	{

	var myRand = new Date().getTime();

	var modurl = myurl + "?" + query + "&rand=" + myRand;

	myRequest.open("GET", modurl, true);

	myRequest.onreadystatechange = useHttpResponse(div_name);

	myRequest.send(null);

	}



var div_id = '';

var next_myurl = '';

var next_query = '';

var next_next_div_name = '';



function postMethod(myurl, query, div_name, thisform, x_next_myurl, x_next_query, x_next_div_name)

	{

	if (thisform)

		{

		var query = '';



		for (i=0,n=thisform.elements.length;i<n;i++)

			{

			if (query)

				{

				query = query + '&' + escape(thisform.elements[i].name) + '=' + escape(thisform.elements[i].value);

				}

			else

				{

				query = escape(thisform.elements[i].name) + '=' + escape(thisform.elements[i].value);

				}

			}

		}



	div_id = div_name;

	myRequest.open("POST", myurl, true);

	myRequest.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

	myRequest.onreadystatechange = useHttpResponse;

	myRequest.send(query);



	if (x_next_myurl)

		{

		next_myurl = x_next_myurl;

		}

	if (x_next_query)

		{

		next_query = x_next_query;

		}

	if (x_next_myurl)

		{

		next_div_name = x_next_div_name;

		}

	}



function useHttpResponse()

	{

	if (myRequest.readyState == 4)

		{

		if (myRequest.status == 200)

			{

			var response = myRequest.responseText;

			document.getElementById(div_id).innerHTML = response;



			if ((next_myurl) && (next_div_name))

				{

				postMethod(next_myurl, next_query, next_div_name);



				next_myurl = '';

				next_query = '';

				next_next_div_name = '';

				}

			}

		else

			{

			alert("An error has occured:" + myRequest.statusText);

			}

		}

	}



function load_main_cart()

	{

	postMethod('/cgi-bin/jump_nav_new_lib.cgi', 'view=cart', 'main');

	}



function add_to_cart(thisform)

	{

	var this_resource_id = thisform.resource_id.value;

	var this_qty = thisform.qty.value;

	var this_size = thisform.size[thisform.size.selectedIndex].value;



	var query = 'view=cart_small&task=add&qty=' + this_qty + '&size=' + this_size + '&resource_id=' + this_resource_id;



	postMethod('/cgi-bin/jump_nav_new_lib.cgi', query, 'cart');

	}



function update_cart(thisform)

	{

	var this_resource_id = thisform.resource_id.value;

	var this_qty = thisform.qty.value;

	var this_size = thisform.size.value;



	var query = 'view=cart_small&task=update&qty=' + this_qty + '&size=' + this_size + '&resource_id=' + this_resource_id;



	postMethod('/cgi-bin/jump_nav_new_lib.cgi', query, 'cart');



	setTimeout('load_main_cart()',1000);

	}



function empty_cart()

	{

	var query = 'view=cart_small&task=empty';



	postMethod('/cgi-bin/jump_nav_new_lib.cgi', query, 'cart');



	setTimeout('load_main_cart()',1000);

	}



function check_form(thisform, url)

	{

	if (!thisform.name.value)

		{

		alert('Please enter your name.');

		thisform.name.focus();

		return false;

		}

	if (!thisform.address.value)

		{

		alert('Please enter your billing address.');

		thisform.address.focus();

		return false;

		}

	if (!thisform.city.value)

		{

		alert('Please enter your city.');

		thisform.city.focus();

		return false;

		}

	if (!thisform.county.value)

		{

		alert('Please enter your county.');

		thisform.county.focus();

		return false;

		}

	if (!thisform.postcode.value)

		{

		alert('Please enter your postcode.');

		thisform.postcode.focus();

		return false;

		}

	if (!thisform.telephone.value)

		{

		alert('Please enter your telephone number.');

		thisform.telephone.focus();

		return false;

		}

	if (!thisform.email.value)

		{

		alert('Please enter your e-mail address.');

		thisform.email.focus();

		return false;

		}



	if (thisform.credit_card_type.selectedIndex == 0)

		{

		alert('Please specify your credit card type.');

		thisform.credit_card_type.focus();

		return false;

		}

	if (!thisform.credit_card_name.value)

		{

		alert('Please enter your name that appears on your credit card.');

		thisform.credit_card_name.focus();

		return false;

		}

	var credit_card_number = thisform.credit_card_number.value;

	if (credit_card_number.match(/^\d{16}$/))

		{



		}

	else

		{

		alert('Please enter your credit card number.');

		thisform.credit_card_number.focus();

		return false;

		}

	if ((thisform.exp_mon.selectedIndex == 0) || (thisform.exp_year.selectedIndex == 0))

		{

		alert('Please specify your credit card expiry month and year.');

		thisform.exp_mon.focus();

		return false;

		}



	postMethod(url, '', 'main', thisform);

	}



function shop_by_brand(url, thisform, div_name)

	{

	var this_brand = thisform.brand[thisform.brand.selectedIndex].value;



	if (this_brand)

		{

		query = 'view=contents&brand=' + escape(this_brand);

		postMethod(url, query, div_name, '', url, 'view=menu&type=brand&brand=' + escape(this_brand), 'menu');

		}

	}



function submit_search(url, thisform, div_name)

	{

	query = 'view=contents&q=' + thisform.q.value;



	postMethod(url, query, div_name);

	}



function javascript_alert(message)

	{

	alert(message);

	}