/************************************************************************************************************
Ajax dynamic list
Copyright (C) April 2006  DTHMLGoodies.com, Alf Magne Kalleland

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

Dhtmlgoodies.com., hereby disclaims all copyright interest in this script
written by Alf Magne Kalleland.

Alf Magne Kalleland, 2006
Owner of DHTMLgoodies.com
	
************************************************************************************************************/	

	var ajax_list_objects = new Array();
	var ajax_list_cachedLists = new Array();
	var ajax_list_activeInput = true;
	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 oldonfocus = new Array();


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

	function ajax_option_list_buildList(letters,paramToExternalFile)
	{
		ajax_optionDiv.innerHTML = '';
		ajax_list_activeItem = false;
		
		if(ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()].indexOf("Geen resultaat") >= 0){
			ajax_options_hide();
			return;
		}
		
		ajax_list_optionDivFirstItem = false;
		var optionsAdded = false;
		ajax_optionDiv.innerHTML = ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()]
		var optionsAdded = true;
		
		if(optionsAdded){
			ajax_optionDiv.style.display='block';
			if(ajax_optionDiv_iframe)ajax_optionDiv_iframe.style.display='';
		}
					
	}
	
	function ajax_option_list_showContent(ajaxIndex,inputObj,paramToExternalFile,whichIndex)
	{
		if(whichIndex!=currentListIndex)return;
		var letters = inputObj.value;
		var content = ajax_list_objects[ajaxIndex].response;
		ajax_list_cachedLists[paramToExternalFile][letters.toLowerCase()] = content;
		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 = 'zoekbox_trefwoord_result';	
			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 = 'zoekbox_trefwoord_result_iframe';
				
				document.body.appendChild(ajax_optionDiv_iframe);
			}
			
//			var allInputs = document.getElementsByTagName('INPUT');
//			
//			for(var no=0;no<allInputs.length;no++){
//				var strInputID = allInputs[no].id
//				oldonfocus[strInputID] = allInputs[no].onfocus;
//
//				if(typeof oldonfocus[strInputID]!='function'){
//					allInputs[no].onfocus=function() {ajax_options_hide; };
//				}else{
////					alert(strInputID)
//					allInputs[no].onfocus=function(){
//					//oldonfocus[strInputID];
//					ajax_options_hide;
//					}
//				}
////				if(!allInputs[no].onkeyup)allInputs[no].onfocus = ajax_options_hide;
////				alert(allInputs[no].onfocus)
//			}			
//
			var allSelects = document.getElementsByTagName('SELECT');
			for(var no=0;no<allSelects.length;no++){
				allSelects[no].onfocus = ajax_options_hide;
			}

			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) ;}
			}

			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 + '=1&trefwoorden=' + inputObj.value.replace(" ","+")  // + '&rnd=' + Math.random();
			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		
		}
		
			
	}
	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();
		
	}