function lookupAddressPostCode(postCode) {
	postCode = trim(postCode);
	if (postCode != "") {
		lookupAddressParams = getRandomParam() + "&post_code=" + escape(postCode);
		jQuery.ajax({   
		  type: "POST",
		  url: "postAddressLookup.php",
		  cache: false,
		  data: lookupAddressParams,
		  beforeSend: function(){ },   
		  complete: function(){ },
		  error: function() { alert('There was an error looking up your address, please try again.') }, 
		  success: function(response){ alert("lookupAddressPostCode after failure: " + response); }   
		}); //close jQuery.ajax(   
	}
}

// This lookupAddress call is not used because its asynchronous - it cannot return the responseArray so it needs to do something inside of success
function lookupAddress(houseName, flatNo, postCode) {
	postCode = trim(postCode);
	if (postCode != "") {
		lookupAddressParams = getRandomParam() + "&house_name=" + escape(houseName) + "&flat=" + escape(flatNo) + "&post_code=" + escape(postCode);
		jQuery.ajax({   
		  type: "POST",
		  url: "postAddressLookup.php",
		  cache: false,
		  // dataType: "xml",
		  data: lookupAddressParams,
		  beforeSend: function(){ },   
		  complete: function(){ },
		  error: function() { lookupAddressPostCode(postCode); }, // if there is an error attempt to get the address from the post code only 
		  success: function(response){ alert("success"); responseArray = parseAddressResponse(response); /* do something with responseArray here */}   
		}); //close jQuery.ajax(   
	}
}

function parseAddressResponse(response) {
	var responseArray = [];
	
	jQuery("address",response).each(function(id) {
		var addressVar = jQuery("address",response).get(id); 
		var addressObj = new Object();
		addressObj.id = jQuery("id", addressVar).text();
		addressObj.address_string = jQuery("address_string", addressVar).text();
		responseArray[responseArray.length] = addressObj;
	}); 
	
	return responseArray;
}

function fillAddressDropDown(responseArray, dropDownElement, selectedValue, pageConstant) {
	fillAddressDropDown2(responseArray, dropDownElement, selectedValue, pageConstant, "Please enter your home address postcode and then click 'Find Address'");
}

function fillAddressDropDown2(responseArray, dropDownElement, selectedValue, pageConstant, badPostCodeAlert) {
	dropDownElement.options.length = 0;
/*	if (responseArray.length == 0) {
		alert(badPostCodeAlert);
		dropDownElement.options.length = 0;	
		googleEventButton('Find Address Button', 'Invalid Postcode', pageConstant);
		return false;
	}*/
	dropDownElement.options.length = responseArray.length + 2;
	dropDownElement.options[0].text = "Please choose an address..."; 
	dropDownElement.options[0].value = -1;
	dropDownElement.options[0].selected = (selectedValue == -1);
	for (var i=0; i<responseArray.length; i++) {
		var index = i + 1;
		dropDownElement.options[index].text = responseArray[i].address_string; 
		dropDownElement.options[index].value = responseArray[i].id;
		dropDownElement.options[index].selected = (selectedValue == responseArray[i].id);
	}	
	var index  = responseArray.length + 1;
	dropDownElement.options[index].text = "My address is not in the list"; 
	dropDownElement.options[index].value = -2; 
	dropDownElement.options[index].selected = (selectedValue == -2);
	dropDownElement.options.length = responseArray.length + 2;
	googleEventButton('Find Address Button', 'Valid Postcode', pageConstant);
}

function lookupAddress_fillDropdown(houseName, flatNo, postCode, dropDownElement, selectedValue, showElementWhileLoading, hideElementWhileLoading, pageConstant) {
	return lookupAddress_fillDropdown2(houseName, flatNo, postCode, dropDownElement, selectedValue, showElementWhileLoading, hideElementWhileLoading, pageConstant, "Please enter your home address postcode and then click 'Find Address'");
}

function lookupAddress_fillDropdown2(houseName, flatNo, postCode, dropDownElement, selectedValue, showElementWhileLoading, hideElementWhileLoading, pageConstant, badPostCodeAlert) {
	var responseArray = [];
	postCode = trim(postCode);
	if (postCode != "") {
		if ((hideElementWhileLoading != null) && (showElementWhileLoading != null)) {
			hideElementWhileLoading.style.display = "none";
			showElementWhileLoading.style.display = "";
		}
		lookupAddressParams = getRandomParam() + "&house_name=" + escape(houseName) + "&flat=" + escape(flatNo) + "&post_code=" + escape(postCode);
		jQuery.ajax({   
		  type: "POST",
		  url: "postAddressLookup.php",
		  cache: false,
		  data: lookupAddressParams,
          timeout: 10000,
		  beforeSend: function(){ },   
		  complete: function(){ },
		  error: function() {
			  // try to post again - ie 6 sometimes fails on every other request so this will fix them
				jQuery.ajax({   
					  type: "POST",
					  url: "postAddressLookup.php",
					  cache: false,
					  data: lookupAddressParams,
			          timeout: 5000,
					  beforeSend: function(){ },   
					  complete: function(){ },
					  error: function() {
						  alert("There was an error loading your address.  Please try again.");
			              if ((hideElementWhileLoading != null) && (showElementWhileLoading != null)) {
			              	showElementWhileLoading.style.display = "none";
			              	hideElementWhileLoading.style.display = "";
			              }
			          },
					  success: function(response) {
						  responseArray = parseAddressResponse(response); 
						  if ((hideElementWhileLoading != null) && (showElementWhileLoading != null)) {
							  showElementWhileLoading.style.display = "none";
							  hideElementWhileLoading.style.display = "";
						  }
						  fillAddressDropDown2(responseArray, dropDownElement, selectedValue, pageConstant, badPostCodeAlert); 
					  }   
				}); //close jQuery.ajax(   
          },
//		  error:function (xhr, ajaxOptions, thrownError){
//              alert(xhr.status);
//              alert(thrownError);
//		  },
		  success: function(response) {
			  responseArray = parseAddressResponse(response); 
			  if ((hideElementWhileLoading != null) && (showElementWhileLoading != null)) {
				  showElementWhileLoading.style.display = "none";
				  hideElementWhileLoading.style.display = "";
			  }
			  fillAddressDropDown2(responseArray, dropDownElement, selectedValue, pageConstant, badPostCodeAlert); 
		  }   
		}); //close jQuery.ajax(   
	}
}