var ajaxBox_offsetX = 0;
var ajaxBox_offsetY = 0;

var minimumLettersBeforeLookup = 1;	// Number of letters entered before a lookup is performed.

var ajax_list_cachedLists = new Array();
var ajax_list_activeInput = false;
var ajax_list_activeItem;
var curlist;
var backend_filename;
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)
{

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



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

		if(ajax_list_cachedLists[backend_filename][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(inputObj,whichIndex)
{
	if(whichIndex!=currentListIndex)return;
	var letters = inputObj.value;
	var elements = curlist.split('|');
	ajax_list_cachedLists[backend_filename][letters.toLowerCase()] = elements;
	ajax_option_list_buildList(letters);

}

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 suggest(inputObj,e)
{
	if(inputObj.id=='job_field')
		backend_filename = 'include/suggest_job.php';
	else if(inputObj.id=='name_reg_field')
		backend_filename = 'include/suggest_name_reg.php';
	else if(inputObj.id=='category_field')
		backend_filename = 'include/suggest_category_edit.php';

	if(e.keyCode==13 || e.keyCode==9)return;
	if(ajax_list_currentLetters[inputObj.name]==inputObj.value)return;
	if(!ajax_list_cachedLists[backend_filename])ajax_list_cachedLists[backend_filename] = 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[backend_filename][inputObj.value.toLowerCase()]){
		ajax_option_list_buildList(inputObj.value,currentListIndex);
	}else{
		var tmpIndex=currentListIndex/1;
		
		ajax_optionDiv.innerHTML = '';


		JsHttpRequest.query(
		    backend_filename,
		    {
        'letters':inputObj.value
		    },
		    function(result, errors) {
			    curlist=result["suggest"];
			    ajax_option_list_showContent(inputObj,tmpIndex);

		    },
		    false  // do not disable caching
		);

	}


}

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();

}