function loadJSON(url) {
  var headID = document.getElementsByTagName("head")[0];         
  var newScript = document.createElement('script');
      newScript.type = 'text/javascript';
      newScript.src = url;
  headID.appendChild(newScript);
  _suggest_wordposition = -1;
  _suggest_hlbefore = '';
}

var _suggest_suggestlength = 0;
var _suggest_entersearch = false;
var _suggest_force_wordposition = -1;
var _suggest_count = 0;

function processJSONSuggest(sresult, servercount){
	var htmlresult = "";
  var searchword = document.getElementById('searchword').value;

	if (sresult.length > 0 && (!servercount || servercount == -1 || servercount == _suggest_count)) {
	  htmlresult = "<table>";
    _suggest_suggestlength = sresult.length;
    //alert(_suggest_suggestlength);
     
		for(i=0; i<sresult.length; i++) {
		  if(sresult[i]!=undefined){
		    //alert(sresult[i]);
  			var d = sresult[i].d;
  			var w = sresult[i].w;
        w = w.replace(new RegExp(/'/g),"&#39;");

  			htmlresult += "<tr><td width='100%' valign='middle'><div style='width:100%; line-height:18px;' id=\"_sg"+i+"\" onMouseOut='_suggest_L2(this)' onMouseOver='_suggest_L4(this)' title='" + w + "' onclick='_suggest_setword(this.title)'><font size=-1 style='cursor: pointer'>" + d + "</font></div></td></tr>\n";
			}
		}
	}

  document.getElementById('_suggest_disp').innerHTML = htmlresult;

	if (document.getElementById('_suggest_disp').innerHTML != "") {
		document.getElementById('_suggest_disp').style.visibility="visible";
  }
	else {
		document.getElementById('_suggest_disp').style.visibility="hidden";
  }		

  if (_suggest_force_wordposition != -1) {
    _suggest_wordposition = _suggest_force_wordposition;
    _suggest_force_wordposition = -1;

    var hl = document.getElementById('_sg'+_suggest_wordposition);
    _suggest_L4(hl);
    _suggest_hlbefore = hl;
  };

  /*
	if(!_suggest_entersearch) {
	  document.getElementById('_suggest_disp').style.visibility="visible";
  }
  else{
    document.getElementById('_suggest_disp').style.visibility="hidden";
    _suggest_entersearch = false;
  }	
  */
	if(_suggest_entersearch) {
	  document.getElementById('_suggest_disp').style.visibility="hidden";
    //document.getElementById('exampleselect').style.visibility="visible";
    _suggest_entersearch = false;
  }	
} 

function clearSuggestDiv() {
		document.getElementById('_suggest_disp').innerHTML= "";
		document.getElementById('_suggest_disp').style.visibility="hidden";
    //document.getElementById('exampleselect').style.visibility="visible";
}

function _suggest_L2(x) {
	//x.style.cssText = '';
	x.style.backgroundColor = '#ffffff';
	x.style.color = '#000000';
}

function _suggest_L4(x) {
  if(x==null) return false;
	//x.style.cssText = 'color:red;background-color:#bdffbd;border:0px solid blue;';
	x.style.backgroundColor = '#EDF5FA';
	x.style.color = '#494949';
	_suggest_wordposition = parseInt(x.id.substr(3));
	if(_suggest_hlbefore!='') _suggest_L2(_suggest_hlbefore);
	_suggest_hlbefore = x;
}

function dosuggestClicked(checked) {
	if (checked) {
		_suggest_load(document.getElementById("searchword").value);
	} else {
    clearSuggestDiv();
	}
}

function suggest_navigation_keys_check(e) {
  var keycode;
  if (window.event) {
    keycode = window.event.keyCode; // IE 
  }
  else if (e) keycode = e.which; //Firefox 
  if(document.getElementById('_suggest_disp').style.visibility!="hidden"){
   switch(keycode) {
      case 40: //down arrow
          if(_suggest_wordposition<_suggest_suggestlength-1) {
            _suggest_wordposition++;
          }
          else {
            _suggest_wordposition = 0;
            //_suggest_hlbefore = '';
          }
            if(_suggest_hlbefore!='') _suggest_L2(_suggest_hlbefore);
            var hl = document.getElementById('_sg'+_suggest_wordposition);
            _suggest_L4(hl);
            _suggest_hlbefore = hl;
         
      break;
      case 37: //left arrow
      break;
      case 39: //right arrow
      break;
      case 38: //up arrow
          if(_suggest_wordposition>0) {
            _suggest_wordposition--;
          }
          else {
            _suggest_wordposition = _suggest_suggestlength-1;
          }
            if(_suggest_hlbefore!='') _suggest_L2(_suggest_hlbefore);
            var hl = document.getElementById('_sg'+_suggest_wordposition);
            _suggest_L4(hl);
            _suggest_hlbefore = hl;
      break;
      /*
      case 32://spacebar
          var hl = document.getElementById('_sg'+_suggest_wordposition);
          document.getElementById('searchword').value = getInnerWord(hl);
          document.getElementById('_suggest_disp').style.visibility="hidden";
          */
      break;
      case 13://enter
          if (_suggest_timer) {
           clearTimeout(_suggest_timer);
          }

          document.getElementById('_suggest_disp').style.visibility="hidden";
		      //document.getElementById('exampleselect').style.visibility="visible";
          var hl = document.getElementById('_sg'+_suggest_wordposition);
          //document.getElementById('searchword').value = getInnerWord(hl);
          if (hl) {
            document.getElementById('searchword').value = hl.title;
            _suggest_entersearch = true;
            hl.onclick();
            //doSearch(''); // form's onsubmit will do that
          }
      break;
      case 27://esc
          document.getElementById('_suggest_disp').style.visibility="hidden";
          //document.getElementById('exampleselect').style.visibility="visible";
      break;
      //default :alert(keycode);
      default :
        //return false; // no navigation keys
        return true; // nativation keys
    }
    //return true; // nativation keys
  }
  else {
    if(keycode == 40) {
      // force suggest
      _suggest_old_headword = "";
      _suggest_force_wordposition = 0;
    }
  }
}

var _suggest_timer = 0;
var _suggest_old_headword = "";
function _suggest_load() {
     	var str = document.getElementById('searchword').value;
      //alert(str + ", old = " + _suggest_old_headword);
      if ( str != _suggest_old_headword ) {
        _suggest_old_headword = str;
        str = str.replace(new RegExp(/'/g),"&#39;");
        str = encodeURIComponent(str);

        if (_suggest_timer) {
          clearTimeout(_suggest_timer);
        }

        _suggest_timer = setTimeout("_suggest_doLoad('"+str+"')", 300);
      }
}

var _suggest_wordposition = -1;
var _suggest_hlbefore = '';

var count = 1;
function _suggest_doLoad(str) {  
	if(!str || str.length < 3 || ! document.getElementById('dosuggest').checked ) {
		document.getElementById('_suggest_disp').innerHTML="";
		document.getElementById('_suggest_disp').style.visibility="hidden";
    //document.getElementById('exampleselect').style.visibility="visible";
		return;
	}
 
  _suggest_count++;
  loadJSON('suggestword?key='+str+'&count='+count);
  count++;
}

function setSuggestDivPosition () {
   document.getElementById('_suggest_disp').style.top = document.getElementById('searchword').style.top;
}