var gsc_basicmatch = /[ÁÂ×ÇÄŸÖÚÉÊËÌÍÎÏÐÒÓÔÕÆÈÃÞÛÝßÙØÜÀÑa-z0-9 ]/i;

function gsc_getquery(elt, q){
	q = trim(q);
	q = q.replace('\s+', ' ');
	if (q.length == 0 || !gsc_basicmatch.test(q)) {
		gsc_emptyresults(elt);
		return '';
	}

	if (elt.currentQuery && (elt.currentQuery == q || elt.tempQuery == q))
		return '';

	elt.currentQuery = q;
	return q;
}

function gsc_hide(elt){
	if (elt) elt.style.display = 'none';
}

function gsc_ishidden(elt){
	return elt.style.display == 'none';
}

function gsc_show(elt){
	if (elt) elt.style.display = 'block';
}

function gsc_emptyresults(elt){
	if (!elt) return;

	elt.innerHTML = '';
	elt.numResults = 0;
	elt.selectedIndex = 0;
	elt.results = [];
	gsc_hide(elt);
}

function gsc_addresult(elt, qElt, q, c, sel)
{
	if (!elt) return;

	if (sel) elt.selectedIndex = elt.numResults;

	idx = elt.numResults;
	elt.results[elt.numResults++] = q;

	var _res = '';
	_res += '<div class="' + (sel ? 'srs' : 'sr') + '"'
		 +  ' onmouseover="gsc_mouseover(\'' + elt.id + '\', \'' + qElt.id + '\', ' + idx + ')"'
		 +  ' onmouseout="gsc_mouseout(\'' + elt.id + '\', ' + idx + ')"'
		 +  ' onclick="gsc_mouseclick(\'' + elt.id + '\', \'' + qElt.id + '\', ' + idx + ')">';
	_res += '<span class="srt">' + q + '</span>';
	if (c.length > 0)
		_res += '<span class="src">' + c + '</span>';
	_res += '</div>';

	elt.innerHTML += _res;
}

function gsc_mouseover(id, qId, idx)
{
	elt = document.getElementById(id);
	elt.selectedIndex = idx;
	qElt = document.getElementById(qId);
	qElt.focus();

	gsc_highlightsel(elt);
}

function gsc_mouseout(id, idx)
{
	elt = document.getElementById(id);
	elt.selectedIndex = -1;

	gsc_highlightsel(elt);
}

function gsc_mouseclick(id, qId, idx)
{
	elt = document.getElementById(id);
	qElt = document.getElementById(qId);

	qElt.value = elt.results[idx];
	qElt.form.submit();
	//fnShowProps(qElt.form,"form")
}

function gsc_handleup(elt, qElt)
{
	if (elt.numResults > 0 && gsc_ishidden(elt)) {
		gsc_show(elt);
		return;
	}

	if (elt.selectedIndex == 0)
		return;
	else if (elt.selectedIndex < 0)
		elt.selectedIndex = elt.numResults - 1;
	else
		elt.selectedIndex--;
	gsc_highlightsel(elt, qElt);
}

function gsc_handledown(elt, qElt)
{
	if (elt.numResults > 0 && gsc_ishidden(elt)) {
		gsc_show(elt);
		return;
	}

	if (elt.selectedIndex == elt.numResults - 1)
		return;
	else if (elt.selectedIndex < 0)
		elt.selectedIndex = 0;
	else
		elt.selectedIndex++;
	gsc_highlightsel(elt, qElt);
}

function gsc_highlightsel(elt, qElt)
{
	divs = elt.getElementsByTagName('div');

	for (i = 0; i < divs.length; i++) {
		if (i == elt.selectedIndex) {
			divs[i].className = 'srs';
			elt.tempQuery = elt.results[i];

			if (qElt) {
				qElt.value = elt.results[i];
				if (qElt.createTextRange) {
					r = qElt.createTextRange();
					r.moveStart('character', elt.currentQuery.length);
					r.moveEnd('character', qElt.value.length);
					r.select();
				}
				
			}
		}
		else
			divs[i].className = 'sr';
	}
}

__query.onkeydown = function(e){
	key = ajaxac_getkeycode(e);
	switch (key) {
		case 27: // escape
			gsc_hide(__results);
			//return false;
			__query.focus();
			break;
		case 38: // up arrow
			gsc_handleup(__results, __query);
			//return false;
			__query.focus();
			break;
		case 40: // down arrow
			gsc_handledown(__results, __query);
			//return false;
			__query.focus();
			break;
		default:
			__gsctimer.start();
	}
	return true;
}

__results.onload = function() { gsc_emptyresults(this); }

__results.onload();

__gsctimer = new ajaxac_countdowntimer('__gsctimer.ontimerexpire()', 150);
__gsctimer.ontimerexpire = function(){
	_q = gsc_getquery(__results, __query.value);
	if (_q.length < 2)
		return false;
	try {
		__gscfetch = ajaxac_createXMLHttp();
		__gscfetch.open('get', '/search.html' + '?' + 'q=' + escape(_q));

		__gscfetch_xmlhttpsuccess = function(){
			_data = ajaxac_receivejsarray(__gscfetch.responseText);
			gsc_emptyresults(__results);
			if (_data.length > 0) {
				for (i = 0; i < _data.length; i++) {
					gsc_addresult(__results, __query, _data[i][0], _data[i][1], i == 0);
				}
				gsc_show(__results);
				if(__query){
					if(_q == _data[0][0].slice(0,_q.length)){
						__query.value = _data[0][0];
						if(__query.createTextRange){
							r = __query.createTextRange();
							r.moveStart('character', _q.length);
							r.moveEnd('character', __query.value.length);
							r.select();
						}else if(__query.setSelectionRange){
							__query.setSelectionRange(_q.length,__query.value.length);
						}
					}
				}
			}
		}

		__gscfetch_onreadystatechange = function(){
			if (__gscfetch.readyState == 4 && __gscfetch.status == 200 && __gscfetch_xmlhttpsuccess) {
				__gscfetch_xmlhttpsuccess();
			}
		}
		__gscfetch.onreadystatechange = __gscfetch_onreadystatechange;
		__gscfetch.send(null);
	}
	catch (e) {}
	return false;
}