var LS_searchg;
var LS_searchq;
var LS_searcht;
var LS_resultDiv;
var LS_historyDiv;
var LS_xmlHttp;
var LS_timer;
var LS_g = '';
var LS_q = '';
var LS_t = '';
var LS_disabled = true; 
var LS_hasRecord = false;
var LS_visible = false;
var LS_currRow = 0;
var exclude_keyCode = new Array(9,13,16,17,18,19,20,27,33,34,35,36,37,38,39,40,45,46);  //http://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes
var search_type = 'all';
var switched_tab = false;

$(window).blur(function(){
	switched_tab=true;
});

function initLS(){
	LS_searchq = document.getElementById("searchq");	
	LS_searchg = document.getElementById("searchg");
	LS_searcht = document.getElementById("searcht");
	

		
	LS_resultDiv = document.getElementById("searchres");
	LS_historyDiv = document.getElementById("history");

	if (LS_searchq){
		var sq = $(LS_searchq);
		sq.unbind();  // unbind all event last attached
		if(window.location.pathname == '/' || window.location.pathname == '/index.php')
			sq.focus();
		sq.bind('focus',function(e){
			LS_disabled=false;
			if(LS_searchq.value == "")
			{
				doLS();
			}
			});
		sq.bind('blur',function(){LS_disabled=true; setTimeout("showHideLS('none')",250); switched_tab=false;});
		sq.bind('keydown',function(e){switched_tab=false; return preventKeyDefault(e);});
		sq.bind('keypress',function(e){
							 if ( e.which == 13 ){/*if(checkEnter())return false;*/}
							});
		sq.bind('keyup',function(e){selectLS(e);});
		//sq.bind('propertychange',doLS); // IE 10 has a bug making a text box disappear
		sq.bind('input',doLS); //firefox
		
		// this block of code is to replace on propertychange of IE
/*		if ( $.browser.msie ) {  
			sq.bind('keyup', function(e) {
				if (e.keyCode) key = e.keyCode;
				else key = e.which;
				
				if (jQuery.inArray(key, exclude_keyCode) == -1) {  // if the input key is not the exclude key
					doLS();
				}
			});
		}*/
		
		//if (location.hash=='') LS_searchq.focus();
		LS_disabled = false;
	}
}

function doLS(){
	if (!LS_disabled && !switched_tab){
		var g = getG();
		var q = getQ();
		var t = getT();
		if (LS_g==g && LS_q==q && LS_q!="" && LS_t==t) return;

		LS_g = g;
		LS_q = q;
		LS_t = t;
		LS_hasRecord = false;

		if (LS_timer) clearTimeout(LS_timer); 
		LS_timer = setTimeout("getLS()",350); 	
	}
}

function getLS(){
	/*if (LS_q.length==0){ 
		showHideLS('none');
	 	return;
 	}*/
 	LS_xmlHttp=getXmlHttpObject();
 	if (LS_xmlHttp==null) return;

 	var url="/livesearch.php?g="+LS_g+"&q="+encodeURIComponent(LS_q)+"&header_type="+LS_t;
 	
 	url += "&rand=rand"+new Date().getTime();

	LS_xmlHttp.onreadystatechange=drawLS;
	LS_xmlHttp.open("GET",url,true);
	LS_xmlHttp.send(null);
} 

function drawLS(){ 
	if (LS_xmlHttp.readyState==4 || LS_xmlHttp.readyState=="complete"){ 
		if (LS_xmlHttp.responseText.trim().length==0){
			LS_resultDiv.innerHTML='';
			LS_hasRecord = false;
			showHideLS('none');
		}else{
			LS_resultDiv.innerHTML=LS_xmlHttp.responseText; 
			LS_hasRecord = true;
			showHideLS('block');

			//var searchres_left = $(LS_searchq).position().left + 8;
/*			if (search_type == 'product') {
				$("#searchres").css("left", '133px');
			}
			else if (search_type == 'sechand') {
				$("#searchres").css("left", '133px');
			}
			 else {
				$("#searchres").css("left", '10px');
			}*/
		}
	}
}

function selectLS(e){
	var key; 

	if (e.keyCode) key = e.keyCode;
	else key = e.which;

	if (LS_hasRecord){
		switch (key){
		case 38: // Up
			if (LS_currRow==0){
				showHideLS('none'); 
			}else if (LS_currRow==1){
				highlightLS(LS_currRow,'off','k');
				resetQ();
				LS_currRow = 0;
			}else{
				highlightLS(LS_currRow-1,'on','k');
			}
			break;
		case 40: // Down
			if (LS_visible){
				highlightLS(LS_currRow+1,'on','k');
			}else{
				if (LS_g==getG() && LS_q==getQ()) showHideLS('block'); 
				else doLS(); 
			}
			break;
		case 13: // Enter
			showHideLS('none');
			break;
		case 27: // Escape
			resetQ();
			showHideLS('none');			
			break;
		}
	}else{
		if (key==40){ // Down
			if (LS_g!=getG() || LS_q!=getQ()) doLS();
		}
	}
}

function checkEnter(){
	var obj = document.getElementById('ls_result'+LS_currRow);
	if(obj){
	  obj = $(obj);
	  var href = obj.attr('href');
	  	
	  if(href) {
	  	location = href;
	  	return true;
	  }	  
	}
	return false;
}

function highlightLS(id,status,device){
	if (id>0){
		var obj = document.getElementById('ls_result'+id);
		var fullname_obj = document.getElementById('ls_fullname'+id);
		if (obj){
			//var obj_link = document.getElementById('ls_result_link'+id);
			if (status=='on'){
				highlightLS(LS_currRow,'off'); 

				if (device=='k'&&fullname_obj) setQ(getInnerText(fullname_obj)); 
				obj.className = 'active';
			//	obj_link.className = 'active';
				LS_currRow = id;
			}else{
				obj.className = '';
			}
		}
	}
}

function submitLS(obj, url){
	showHideLS('none');
	location.href = url;
	
	/*
	setQ(getInnerText(obj));
	document.searchform.submit();
	*/
}

function getG(){
	return LS_searchg.value;
}

function getQ(){
	return LS_searchq.value.ltrim();
}

function getT(){
	if(!LS_searcht)
		return '';
	return LS_searcht.value.ltrim();
}

function getInnerText(obj){
	if (obj.innerText) return obj.innerText;
	else return obj.textContent;
}

function setQ(q){
	LS_disabled = true; 
	LS_searchq.value = q; 
	LS_disabled = false;
}

function resetQ(){
	LS_disabled = true; 
	LS_searchq.value = LS_q; 
	LS_disabled = false;
}

function showHideLS(s){
	if (LS_disabled) s='none';

	if (s=='block'){
		LS_visible = true;
	}else{
		highlightLS(LS_currRow,'off','k');
		LS_visible = false;
	}

	//if (navigator.appVersion.indexOf('MSIE 6.0')>=0) showHideDummyFrame(s);
	LS_currRow = 0;
	LS_resultDiv.style.display = s;
}

// Fix IE div vs select box z-index problem
function showHideDummyFrame(s){
	df = document.getElementById('dummyFrame'); 
	if (df){
		df.style.width = LS_resultDiv.offsetWidth;
		df.style.height = LS_resultDiv.offsetHeight;
		df.style.top = LS_resultDiv.offsetTop;
		df.style.left = LS_resultDiv.offsetLeft;
		df.style.display = s;
	}
}

function preventKeyDefault(e){
	if (e.keyCode==27||e.keyCode==38||e.keyCode==40){
		if (e.preventDefault) e.preventDefault();
		return false;
	}
}

function getXmlHttpObject(){
	var xmlHttp=null;

	try{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}catch (e){
		// IE
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}

function clearhistory()
{
	document.cookie = "ui_recent_h=; expires=Sun, 03 Jun 2016 06:23:41 GMT; domain=.price.com.hk";
	window.location.href = 'index.php';
}

$(document).ready(initLS);