var ajaxBox_offsetX = 0;
var ajaxBox_offsetY = 0;
var ajax_list_externalFile = '/chart.php';	// Path to external file
var minimumLettersBeforeLookup = 1;	// 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_MSIE = false;
if(navigator.userAgent.indexOf('MSIE')>=0 && navigator.userAgent.indexOf('Opera')<0)ajax_list_MSIE=true;

var currentListIndex = 0;

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;
    if(document.getElementById(ajax_list_activeInput.name + '_hidden'))document.getElementById(ajax_list_activeInput.name + '_hidden').value = inputObj.id; 
    ajax_options_hide();
}

function ajax_options_hide()
{
    if(ajax_optionDiv)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='';
	ajax_options_rollOverActiveItem(ajax_list_optionDivFirstItem,true);
    }
		
}

function ajax_option_list_showContent(ajaxIndex,inputObj,paramToExternalFile,whichIndex)
{
    if(whichIndex!=currentListIndex)return;
    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;
    currentListIndex++;
    if(ajax_list_cachedLists[paramToExternalFile][inputObj.value.toLowerCase()]){
	ajax_option_list_buildList(inputObj.value,paramToExternalFile,currentListIndex);			
    }else{
	var tmpIndex=currentListIndex/1;
	ajax_optionDiv.innerHTML = '';
	var ajaxIndex = ajax_list_objects.length;
	ajax_list_objects[ajaxIndex] = new sack();
	var url = ajax_list_externalFile + '?' + paramToExternalFile + '&domain=' + 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,tmpIndex); };	// 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();			
    }
}


document.documentElement.onclick = autoHideList;

function autoHideList(e)
{
    if(document.all)e = event;
    
    if (e.target) source = e.target;
	else if (e.srcElement) source = e.srcElement;
	if (source.nodeType == 3) // defeat Safari bug
	    source = source.parentNode;		
    if(source.tagName.toLowerCase()!='input' && source.tagName.toLowerCase()!='textarea')ajax_options_hide();
    
}