var ls = {
        url:'',
        search_form:'searchform',
        results_box:'',
        selected_result:undefined,
        had_focus:false,
        
        init:function() {
            if ( $('livesearchpopup_results') == undefined )
                return;

            ls.results_box = $('livesearchpopup_box');
            ls.results_box.hide();
            
            var s = $('s');
            s.setAttribute("autocomplete","off");
            s.setAttribute("placeholder","Search");
            s.onkeypress = ls.noEnter;
            new Form.Element.Observer(s, 1.0, ls.show_results);
            Event.observe(s, "keypress", ls.handleKeypress, false);
            // disabled for now until a solution is found that does not disable clicks on the results 
            Event.observe(s, "blur", ls.lostFocus, false);
            Event.observe(s, "change", ls.lostFocus, false);
            Event.observe(s, "focus", ls.focus, false);
            Event.observe(ls.results_box, "mousemove", function(event){ ls.updateSelection(undefined);})
            //Event.observe(ls.livesearchpopup_box, "mouseover", function(event){ ls.updateSelection(undefined);})
            ls.show_page(s.value, 1);
        },
        
        noEnter:function(evt) {
            evt = (evt) ? evt : ((window.event) ? window.event : "")
            if (evt) {
                return !( evt.keyCode==13 || evt.which==13 );
            }
        },

        lostFocus:function(event) {
            window.setTimeout("ls.results_box.hide();", 500);
        },
        
        focus:function(event) {
            ls.had_focus = true;
            value = Form.Element.getValue($('s'));
            if (value.length > 0) {
                ls.show_page(value, 1);
            }
        },

        handleKeypress:function(event) {
            ls.had_focus = true;
            var key = event.which || event.keyCode;
            switch (key) {
            case 27:
                ls.close();
                return false;
            case Event.KEY_UP:
                ls.updateSelection(-1); 
                return false;
            case Event.KEY_DOWN:
                ls.updateSelection(+1); 
                return false;
            case Event.KEY_RETURN:
                if (ls.selected_result != undefined) {
                    var resultlist = $('resultlist');
                    var children = Element.childElements(resultlist);
                    var link = children[ls.selected_result].firstChild;
                    var url = link.href;
                    document.location = url;
                }
                return false;
            }

            return true;
        },

        updateSelection:function(diff) {
            var resultlist = $('resultlist');
            var children = undefined;
            if (resultlist != undefined ) {
                children = Element.childElements(resultlist);
            }
            if (resultlist == undefined || diff == undefined || resultlist.length == 0) {
                ls.selected_result = undefined;
                if (resultlist != undefined) {
                    var children = Element.childElements(resultlist);
                    for (i=0; i<children.length; i++) {
                        children[i].className = "resultlistitem";
                    }
                }
            } else {
                var num = 0;
                if (ls.selected_result == undefined) {
                    if (diff > 0)
                        num = -1 + diff;
                    else
                        num = children.length + diff;
                } else {
                    num = ls.selected_result + diff;
                }
                if (num >= children.length) {
                    num = children.length - 1;
                }
                if (num < 0) {
                    num = 0;
                }

                ls.selected_result = num;
                for (i=0; i<children.length; i++) {
                    if (i == num) {
                        children[i].className = "resultlistitem_selected";
                    } else {
                        children[i].className = "resultlistitem";
                    }
                }
            }
        },
      
        show_results:function(element, value) {
            if (ls.had_focus) {  
                ls.show_page(value, 1);
            }
        },
        
        show_page:function(s, page) {
            if (s == "") {
                ls.results_box.hide();
            } else {
                window.clearTimeout();
                ls.results_box.show();
                var pars = 's=' + s + '&paged=' + page;
                new Ajax.Updater('livesearchpopup_results', ls.url, { method: 'get', parameters: pars });
            }

            ls.updateSelection(undefined); 
        },
        
        close:function() {
            Field.clear('s');
            ls.results_box.hide();
        }
}

Event.observe(window, 'load', ls.init, false);

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