function loadScriptTag(fullUrl) {
    // Build a script Id with a timestamp and a random number
    var scriptId = "JscriptId" + (new Date()).getTime() + Math.floor(Math.random()*11);

    var scriptObj = document.createElement("script");
    scriptObj.setAttribute("type", "text/javascript");
    scriptObj.setAttribute("charset", "utf-8");
    scriptObj.setAttribute("src", fullUrl + "&reqID=" + scriptId);
    scriptObj.setAttribute("id", scriptId);

    document.getElementsByTagName("head").item(0).appendChild(scriptObj);
}

function removeScriptTagById(id) {
    var jScriptTag = document.getElementById(id);
    jScriptTag.parentNode.removeChild(jScriptTag);
}

function ISuggest()
{
    //RFCID for search suggest
    var _RFCID = '114';

    //original RFCID
    var _originalRFCID = null;

    //holds reference to RFCID element
    var _rfcidElements = null;

    //holds the xmlHttpRequest object
    var _requestClient = null;

    //holds reference to textbox for which suggestions are requested
    var _trackingElement = null;

    //text box which has current focus
    var _activeElement = null;

    //the query which was last requested and being displayed
    var _activeQuery = new function(){
        this.query = null;
        this.response = null;
    };

    //time to wait before creating request.
    var _timeoutPeriod = 500;

    //index of current selected suggestion
    var _currentSelection = -1;

    //selected suggestion
    var _selectedValue = null;

    //reference to div used for display
    var _suggestionsPanel = null;

    var _jsonClient = null;

    //get the absolute position of an object
    var _findPos = function ( obj ) {
        var curleft = curtop = 0;
        try{
            if (obj.offsetParent) {
                do {
                    curleft += obj.offsetLeft;
                    curtop += obj.offsetTop;
                } while (obj = obj.offsetParent);

                return {
                    left:curleft,
                    top:curtop
                };
            }
        }
        catch(e){}
        return null;
    };

    var _changeCallbacks = {};

    //selects previous suggestion
    var _selectPrevious = function(){
        if(_currentSelection >= 0)
            _suggestionsPanel.childNodes[_currentSelection].className = 'suggest_link';

        if(_currentSelection == 0 || _currentSelection == -1)
            _currentSelection = _suggestionsPanel.childNodes.length - 1;
        else
            _currentSelection--;
        _suggestionsPanel.childNodes[_currentSelection].className = 'suggest_link_over';

        if(_currentSelection > -1){
            var value = _suggestionsPanel.childNodes[_currentSelection].childNodes[0].nodeValue;
            _activeQuery.query = value;
            _activeQuery.response = null;
            _activeElement.value = value;
            _selectedValue = value;
        }
    };

    //selects next suggestion
    var _selectNext = function(){
        if(_currentSelection >= 0)
            _suggestionsPanel.childNodes[_currentSelection].className = 'suggest_link';

        if(_currentSelection == (_suggestionsPanel.childNodes.length - 1))
            _currentSelection = 0;
        else
            ++_currentSelection;

        _suggestionsPanel.childNodes[_currentSelection].className = 'suggest_link_over';

        if(_currentSelection > -1){
            var value = _suggestionsPanel.childNodes[_currentSelection].childNodes[0].nodeValue;
            _activeQuery.query = value;
            _activeQuery.response = null;
            _activeElement.value = value;
            _selectedValue = value;
        }
    };

    //displays the suggestions panel
    var _showSuggestions = function(){
        _suggestionsPanel.style['display'] = 'block';
        _currentSelection = -1;

        var pos = _findPos(_trackingElement);

        _suggestionsPanel.style['left'] = pos.left - 6 + 'px';
        _suggestionsPanel.style['top'] = pos.top + _trackingElement.offsetHeight + 'px';
        _suggestionsPanel.style['width'] = _trackingElement.offsetWidth + 8 + 'px';
    };

    //hides suggestion panel
    var _hideSuggestions = function(){
        _suggestionsPanel.innerHTML = '';
        _suggestionsPanel.style['display'] = 'none';
    };

    this.insertScriptTag = function(){
        if(!_activeElement || _activeElement.value == _activeQuery.query) return;

        _trackingElement = _activeElement;
        var str = escape(_activeElement.value);

        if(str == ''){
            _suggestionsPanel.style['display'] = 'none';
            return;
        }

        _activeQuery.query = str;

        // The web service call
        var host = 'suggest.infospace.com';  // Modify this for local testing
        loadScriptTag('http://' + host + '/QuerySuggest/SuggestServlet?prefix=' + str);
    };

    //handles keyUp event on input edit boxes
    var _onEditKeyUp = function(e){
        if (!e) var e = window.event;
        var code;
        if (e.keyCode) code = e.keyCode;
        else if (e.which) code = e.which;


        if(code != 27 && code != 40 && code != 38 && code != 13)
            window.setTimeout("iSuggest.insertScriptTag()", _timeoutPeriod);

        if (code == 13 && _selectedValue != null){
            submitTopForm(1);
        }
    };

    //handles the global keyboard events
    this.onKeyUp = function (e){
        if (e.keyCode == 13 && _selectedValue != null){
            submitTopForm(1);
        }
        if(_suggestionsPanel.style['display'] != 'block' && _suggestionsPanel.childNodes.length == 0) return;

        var code;
        if (e.keyCode) code = e.keyCode;
        else if (e.which) code = e.which;

        //alert(code);
        switch(code)
        {
            case 40: //handle key down
                _selectNext();
                break;
            case 38: //handle key up
                _selectPrevious();
                break;
            case 27: //handle esc
                _hideSuggestions();
                _activeQuery.query = null;
                _activeQuery.response = null;
                break;
        }
    };

    this.PopulateResults = function(suggestions, reqID){
        _suggestionsPanel.innerHTML = '';
        _currentSelection = -1;

        if(suggestions){
            for(var i=0; i < suggestions.length; i++) {
                var suggest = '<div onmouseover="javascript:iSuggest.suggestOver(this);" onmouseout="javascript:iSuggest.suggestOut(this);" onclick="javascript:iSuggest.setSearch(this.childNodes[0].nodeValue);submitTopForm(1);" class="suggest_link" id="suggest_link_'+ i + '">' + suggestions[i] + '</div>';
                _suggestionsPanel.innerHTML += suggest;
            }
        }

        removeScriptTagById(reqID);

        if(_suggestionsPanel.innerHTML == "" || suggestions == null)
            _hideSuggestions();
        else
            _showSuggestions();
    };

    //global onclick event. used to hide suggestions
    this.onMouseClick = function(){
        _hideSuggestions();
        _activeQuery.query = null;
        _activeQuery.response = null;
    };

    //Mouse over function
    this.suggestOver = function (div_value) {
        div_value.className = 'suggest_link_over';
    };

    //Mouse out function
    this.suggestOut = function (div_value) {
        div_value.className = 'suggest_link';
    };

    var _logSelection = function () {
    /*loadScriptTag(
			'http://wsapi.infospace.com/clickcallbackserver/_iceUrlFlag=1' +
			'?0=&1=0&4=67.63.63.64&5=67.63.63.64&9=8d3a32ecef0a4087816ca8aa342acb01&10=1&11=' +
			ispace_brand + '&14=116&15=other&40=cRGrgtElyOE%3D&_IceUrl=true'
		);*/
    };

    //Click function
    this.setSearch = function (value) {

        //Log the PT interaction by sending an asynchronous request to the clickcallbackserver
        _logSelection();

        _activeQuery.query = value;
        _activeQuery.response = null;
        _hideSuggestions();
        _activeElement.value = value;
        if (_changeCallbacks[_activeElement.id]) {
            _changeCallbacks[_activeElement.id]();
        }

        return false;
    };

    //initializes the component
    this.init = function(inputsToTrack){

        _suggestionsPanel = document.createElement('div');
        _suggestionsPanel.className = 'suggestPanel';
        _suggestionsPanel.id = 'suggestPanel';

        document.body.insertBefore(_suggestionsPanel, document.body.firstChild);

        for(var i=0; i < inputsToTrack.length; i++){
            var field = inputsToTrack[i];
            if (typeof(field) == "string") {
                this.addField(field);
            }
            else if (field.id) {
                this.addField(field.id);
                if (field.buttonId) {
                    var buttonId = field.buttonId;
                    _changeCallbacks[field.id] = function () {
                        document.getElementById(buttonId).click()
                        };
                }
                else if (field.formId) {
                    var formId = field.formId;
                    _changeCallbacks[field.id] = function () {
                        document.getElementById(formId).submit()
                        };
                }
                else if (field.callback) {
                    var callback = field.callback;
                    _changeCallbacks[field.id] = callback;
                }
            }
        }
    };

    //adds a text field to be tracked for suggestions
    this.addField = function(txtID){
        var textBox = document.getElementById(txtID);

        textBox.oldOnFocus = (textBox.onfocus) ? textBox.onfocus : function() {};
        function newOnFocus(e) {
            _activeElement = this;
            this.oldOnFocus();
        }
        textBox.onfocus = newOnFocus;

        textBox.oldOnBlur = (textBox.onblur) ? textBox.onblur : function() {};
        function newOnBlur(e) {
            if(_suggestionsPanel.style['display'] != 'block')_activeElement = null;
            this.oldOnBlur();
        }
        textBox.onblur = newOnBlur;

        textBox.oldEditKey = (textBox.onkeyup) ? textBox.onkeyup : function() {};
        function newEditKeyUp(e) {
            _activeElement = this;
            this.oldEditKey();
            if (!e) var e = window.event;
            _onEditKeyUp(e);
        }
        textBox.onkeyup = newEditKeyUp;

        textBox.setAttribute('autocomplete','off');
    };
}

//global suggest client object
var iSuggest;

//Initializes the page for suggestions.
function Initialize() {
    iSuggest = new ISuggest();
    iSuggest.init(ispace_txtElements);

    //hook events
    var oldOnClick = (document.onclick) ? document.onclick : function() {};
    function newOnClick(e) {
        oldOnClick();
        if (!e) var e = window.event;
        iSuggest.onMouseClick(e);
    }
    document.onclick = newOnClick;

    var oldOnKeyUp = (document.onkeyup) ? document.onkeyup : function() {};
    function newOnKeyUp(e) {
        oldOnKeyUp();
        if (!e) var e = window.event;
        iSuggest.onKeyUp(e);
    }
    document.onkeyup = newOnKeyUp;
}



// Write the cache busting IFRAME
document.write('<iframe style="height:0px;width:0px;visibility:hidden;display:none;" src="about:blank">this prevents back forward cache</iframe>');

// Write the minimum styles
document.writeln('<style type="text/css">');
document.writeln('.suggest_link {overflow:hidden;}');
document.writeln('.suggest_link_over {overflow:hidden;cursor:pointer;}');
document.writeln('.suggestPanel {position:absolute;display:none;text-align:left;}');
document.writeln('</style>');

Initialize();