/************************************************************************************************************
	(C) www.dhtmlgoodies.com, April 2006
	
	This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	
	
	Terms of use:
	You are free to use this script as long as the copyright message is kept intact. However, you may not
	redistribute, sell or repost it without our permission.
	
	Thank you!
	
	www.dhtmlgoodies.com
	Alf Magne Kalleland
	
	************************************************************************************************************/	

var dist = new sack();
var curToID=false;
var curFromID=false;
var curToTable=false;
var curFromTable=false;
var locId = false;
var locTable = false;
var ajaxBox_offsetX = 0;
var ajaxBox_offsetY = 0;
var ajax_list_externalFile = '/include/ajax-list.php';	// Path to external file
var minimumLettersBeforeLookup = 3;	// Number of letters entered before a lookup is performed.

var ajax_list_objects = new Array();
var ajax_list_cachedLists = new Array();
var ajax_list_activeInput = false;
var ajax_list_activeItem;
var ajax_list_optionDivFirstItem = false;
var ajax_list_currentLetters = new Array();
var ajax_optionDiv = false;
var ajax_optionDiv_iframe = false;
var ajax_list_splitInfo = new Array(); 
var ajax_list_tempId;

var ajax_list_MSIE = false;
if(navigator.userAgent.indexOf('MSIE')>=0 && navigator.userAgent.indexOf('Opera')<0)ajax_list_MSIE=true;


function getDistance(){
	var toID = document.getElementById('to_id').value;
	var fromID = document.getElementById('from_id').value;
	var toTable = document.getElementById('to_table').value;
	var fromTable = document.getElementById('from_table').value;
	if(toID.length!=0 && fromID.length!=0 && toTable.length!=0 && fromTable.length!=0){
		curToID = toID;
		curFromID = fromID;
		dist.requestFile = '/include/great-circle.php?id1='+fromID+'&id2='+toID+'&toTable='+toTable+'&fromTable='+fromTable;	// Specifying which file to get
		dist.onCompletion = showDistance;	// Specify function that will be executed after file has been found
		dist.runAJAX();		// Execute AJAX function			
	}
}

function showDistance(){
	var formObj = document.forms['calc'];
	eval(dist.response);
	if(document.getElementById('from').value==null||document.getElementById('from').value==''){
		document.getElementById('area1').value = null;
		document.getElementById('lat1').value = null;
		document.getElementById('long1').value = null;
		document.getElementById('miles').value = null;
		document.getElementById('km').value = null;
		document.getElementById('naut').value = null;
	}
	if(document.getElementById('to').value==null||document.getElementById('to').value==''){
		document.getElementById('area2').value = null;
		document.getElementById('lat2').value = null;
		document.getElementById('long2').value = null;
		document.getElementById('miles').value = null;
		document.getElementById('km').value = null;
		document.getElementById('naut').value = null;
	}
	document.getElementById('area1').value = document.getElementById('from').value;
	document.getElementById('area2').value = document.getElementById('to').value;
	document.getElementById('showDistance').style.display = 'block';
	document.getElementById('showLat-Long').style.display = 'block';
}

function reset(){
	document.getElementById('area1').value = null;
	document.getElementById('area2').value = null;
	document.getElementById('lat').value = null;
	document.getElementById('long').value = null;
}

function showCoordinates(){
	var formObj = document.forms['lat_long'];
	eval(dist.response);
	if(document.getElementById('location').value==null||document.getElementById('location').value==''){
		document.getElementById('area').value = null;
		document.getElementById('lat').value = null;
		document.getElementById('long').value = null;
	}
	if(document.getElementById('MAPLINK')){
		var items = document.getElementById('MAPLINK').getElementsByTagName('a');
		items[0].href="/maps/lat-lon.html?pn="+escape(document.getElementById('location').value)+"&ll="+document.getElementById('declat').value+','+document.getElementById('declong').value+"&dms="+document.getElementById('lat').value+','+document.getElementById('long').value;
	}
	document.getElementById('area').value=document.getElementById('location').value;
	document.getElementById('showLat-Long').style.display='block';
}

function getCoordinates(){
	var locId = document.getElementById('location_id').value;
	var locTable = document.getElementById('location_table').value;
	if(locId.length!=0 && locTable.length!=0){
		dist.requestFile = '/include/great-circle.php?id='+locId+'&locTable='+locTable;	// which file?
		dist.onCompletion = showCoordinates; // Specify function that will be executed after file has been found
		dist.runAJAX();	// Execute AJAX function			
	}
}

function reset(){
	document.getElementById('area').value = null;
	document.getElementById('lat').value = null;
	document.getElementById('long').value = null;
}

function ajax_getTopPos(inputObj)
{

	var returnValue = inputObj.offsetTop;
	while((inputObj = inputObj.offsetParent) != null){
		returnValue += inputObj.offsetTop;
	}
	return returnValue;
}
function ajax_list_cancelEvent()
{
	return false;
}

function ajax_getLeftPos(inputObj)
{
	var returnValue = inputObj.offsetLeft;
	while((inputObj = inputObj.offsetParent) != null)returnValue += inputObj.offsetLeft;

	return returnValue;
}

function ajax_option_setValue(e,inputObj)
{
	if(!inputObj)inputObj=this;
	var tmpValue = inputObj.innerHTML;
	if(ajax_list_MSIE)tmpValue = inputObj.innerText;else tmpValue = inputObj.textContent;
	if(!tmpValue)tmpValue = inputObj.innerHTML;
	ajax_list_activeInput.value = tmpValue;
	ajax_list_tmpId = inputObj.id;
	ajax_list_splitInfo = ajax_list_tmpId.split(/@@@/gi);

	if(document.getElementById(ajax_list_activeInput.name + '_id'))document.getElementById(ajax_list_activeInput.name + '_id').value = ajax_list_splitInfo[0];
	if(document.getElementById(ajax_list_activeInput.name + '_table'))document.getElementById(ajax_list_activeInput.name + '_table').value = ajax_list_splitInfo[1]; 
	ajax_options_hide();
}

function ajax_options_hide()
{
	ajax_optionDiv.style.display='none';	
	if(ajax_optionDiv_iframe)ajax_optionDiv_iframe.style.display='none';
}

function ajax_options_rollOverActiveItem(item,fromKeyBoard)
{
	if(ajax_list_activeItem)ajax_list_activeItem.className='optionDiv';
	item.className='optionDivSelected';
	ajax_list_activeItem = item;

	if(fromKeyBoard){
		if(ajax_list_activeItem.offsetTop>ajax_optionDiv.offsetHeight){
			ajax_optionDiv.scrollTop = ajax_list_activeItem.offsetTop - ajax_optionDiv.offsetHeight + ajax_list_activeItem.offsetHeight + 2 ;
		}
		if(ajax_list_activeItem.offsetTop<ajax_optionDiv.scrollTop)
			{
				ajax_optionDiv.scrollTop = 0;	
			}
	}
}

function ajax_option_list_buildList(letters,paramToExternalFile)
{

	ajax_optionDiv.innerHTML = '';
	ajax_list_activeItem = false;
	if(ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()].length<=1){
		ajax_options_hide();
		return;			
	}



	ajax_list_optionDivFirstItem = false;
	var optionsAdded = false;
	for(var no=0;no<ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()].length;no++){
		if(ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()][no].length==0)continue;
		optionsAdded = true;
		var div = document.createElement('DIV');
		var items = ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()][no].split(/###/gi);

		if(ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()].length==1 && ajax_list_activeInput.value == items[0]){
			ajax_options_hide();
			return;						
		}


		div.innerHTML = items[items.length-1];
		div.id = items[0];
		div.className='optionDiv';
		div.onmouseover = function(){ ajax_options_rollOverActiveItem(this,false) }
		div.onclick = ajax_option_setValue;
		if(!ajax_list_optionDivFirstItem)ajax_list_optionDivFirstItem = div;
		ajax_optionDiv.appendChild(div);
	}	
	if(optionsAdded){
		ajax_optionDiv.style.display='block';
		if(ajax_optionDiv_iframe)ajax_optionDiv_iframe.style.display='';
	}

}

function ajax_option_list_showContent(ajaxIndex,inputObj,paramToExternalFile)
{
	var letters = inputObj.value;
	var content = ajax_list_objects[ajaxIndex].response;
	var elements = content.split('|');
	ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()] = elements;
	ajax_option_list_buildList(letters,paramToExternalFile);

}

function ajax_option_resize(inputObj)
{
	ajax_optionDiv.style.top = (ajax_getTopPos(inputObj) + inputObj.offsetHeight + ajaxBox_offsetY) + 'px';
	ajax_optionDiv.style.left = (ajax_getLeftPos(inputObj) + ajaxBox_offsetX) + 'px';
	if(ajax_optionDiv_iframe){
		ajax_optionDiv_iframe.style.left = ajax_optionDiv.style.left;
		ajax_optionDiv_iframe.style.top = ajax_optionDiv.style.top;			
	}		

}

function ajax_showOptions(inputObj,paramToExternalFile,e){
	if(e.keyCode==13 || e.keyCode==9)return;
	if(ajax_list_currentLetters[inputObj.name]==inputObj.value)return;
	if(!ajax_list_cachedLists[paramToExternalFile])ajax_list_cachedLists[paramToExternalFile] = new Array();
	ajax_list_currentLetters[inputObj.name] = inputObj.value;
	if(!ajax_optionDiv){
		ajax_optionDiv = document.createElement('DIV');
		ajax_optionDiv.id = 'ajax_listOfOptions';
		document.body.appendChild(ajax_optionDiv);

		if(ajax_list_MSIE){
			ajax_optionDiv_iframe = document.createElement('IFRAME');
			ajax_optionDiv_iframe.border='0';
			ajax_optionDiv_iframe.style.width = ajax_optionDiv.clientWidth + 'px';
			ajax_optionDiv_iframe.style.height = ajax_optionDiv.clientHeight + 'px';
			ajax_optionDiv_iframe.id = 'ajax_listOfOptions_iframe';

			document.body.appendChild(ajax_optionDiv_iframe);
		}

		var allInputs = document.getElementsByTagName('INPUT');
		for(var no=0;no<allInputs.length;no++){
			if(!allInputs[no].onkeyup)allInputs[no].onfocus = ajax_options_hide;
		}
		var allSelects = document.getElementsByTagName('SELECT');
		for(var no=0;no<allSelects.length;no++){
			allSelects[no].onfocus = ajax_options_hide;
		}

		var oldonkeydown=document.body.onkeydown;
		if(typeof oldonkeydown!='function'){
			document.body.onkeydown=ajax_option_keyNavigation;
		}else{
			document.body.onkeydown=function(){
				oldonkeydown();
				ajax_option_keyNavigation() ;}
		}
		var oldonresize=document.body.onresize;
		if(typeof oldonresize!='function'){
			document.body.onresize=function() {ajax_option_resize(inputObj); };
		}else{
			document.body.onresize=function(){oldonresize();
																				ajax_option_resize(inputObj) ;}
		}

	}

	if(inputObj.value.length<minimumLettersBeforeLookup){
		ajax_options_hide();
		return;
	}

	ajax_optionDiv.style.top = (ajax_getTopPos(inputObj) + inputObj.offsetHeight + ajaxBox_offsetY) + 'px';
	ajax_optionDiv.style.left = (ajax_getLeftPos(inputObj) + ajaxBox_offsetX) + 'px';
	if(ajax_optionDiv_iframe){
		ajax_optionDiv_iframe.style.left = ajax_optionDiv.style.left;
		ajax_optionDiv_iframe.style.top = ajax_optionDiv.style.top;
	}

	ajax_list_activeInput = inputObj;
	ajax_optionDiv.onselectstart = ajax_list_cancelEvent;

	if(ajax_list_cachedLists[paramToExternalFile][inputObj.value.toLowerCase()]){
		ajax_option_list_buildList(inputObj.value,paramToExternalFile);
	}else{
		ajax_optionDiv.innerHTML = '';
		var ajaxIndex = ajax_list_objects.length;
		ajax_list_objects[ajaxIndex] = new sack();
		var url = ajax_list_externalFile + '?' + paramToExternalFile + '=1&letters=' + inputObj.value.replace(" ","+");
		ajax_list_objects[ajaxIndex].requestFile = url; // Specifying which file to get
		ajax_list_objects[ajaxIndex].onCompletion = function(){ ajax_option_list_showContent(ajaxIndex,inputObj,paramToExternalFile); }; // Specify function that will be executed after file has been found
		ajax_list_objects[ajaxIndex].runAJAX(); // Execute AJAX function
	}
}

function getLocation (letters,inputObj) {
	var ajaxIndex = ajax_list_objects.length;
  var paramToExternalFile = 'getFeaturesByLetters';
	ajax_list_objects[ajaxIndex] = new sack();
	var url = ajax_list_externalFile + '?' + paramToExternalFile + '=1&letters=' + letters;
	ajax_list_objects[ajaxIndex].requestFile = url; // Specifying which file to get
	ajax_list_objects[ajaxIndex].onCompletion = function(){ ajax_option_setValue(null,inputObj) }
//ajax_option_list_showContent(ajaxIndex,inputObj,paramToExternalFile); }; // Specify function that will be executed after file has been found
	ajax_list_objects[ajaxIndex].runAJAX(); // Execute AJAX function
}

function ajax_option_keyNavigation(e)
{
	if(document.all)e = event;

	if(!ajax_optionDiv)return;
	if(ajax_optionDiv.style.display=='none')return;

	if(e.keyCode==38){	// Up arrow
		if(!ajax_list_activeItem)return;
		if(ajax_list_activeItem && !ajax_list_activeItem.previousSibling)return;
		ajax_options_rollOverActiveItem(ajax_list_activeItem.previousSibling,true);
	}

	if(e.keyCode==40){	// Down arrow
		if(!ajax_list_activeItem){
			ajax_options_rollOverActiveItem(ajax_list_optionDivFirstItem,true);
		}else{
			if(!ajax_list_activeItem.nextSibling)return;
			ajax_options_rollOverActiveItem(ajax_list_activeItem.nextSibling,true);
		}
	}

	if(e.keyCode==13 || e.keyCode==9){	// Enter key or tab key
		if(ajax_list_activeItem && ajax_list_activeItem.className=='optionDivSelected')ajax_option_setValue(false,ajax_list_activeItem);
		if(e.keyCode==13)return false; else return true;
	}
	if(e.keyCode==27){	// Escape key
		ajax_options_hide();			
	}
}