prototabs.jsの不具合？の為かfirefoxでタブ表示が出来なくなった

JavaScript

IEもサファリもちゃんと表示するようだ。
prototabs.jsが原因のようなのでとりあえず自力で直してみた


/* Prototabs
* (c) 2007 James Starmer
*
* Prototabs is freely distributable under the terms of an MIT-style license.
* For details, see the web site: http://www.jamesstarmer.com/prototabs
*
/*--------------------------------------------------------------------------*/

var ProtoTabs = Class.create();
ProtoTabs.prototype = {

initialize: function(element, options) {
this.options = Object.extend({
defaultPanel: '',
ajaxUrls: {},
ajaxLoadingText: 'Loading...'
}, options || {});

this.currentTab = '';

this.element = $(element);
this.listElements = $A(this.element.getElementsByTagName('LI'));
//loop over each list element
for(i = 0; i < this.listElements.length; i++) {

//get the tabs
tabLI = this.listElements[i];
var itemLinks = tabLI.getElementsByTagName('A');
var pItem = itemLinks[0].href.split("#")[1]; //!!
tabLI.itemId = pItem; //!!
tabLI.linkedPanel = $(pItem); //!!
//!! tabLI.itemId = itemLinks[0].href.split("#")[1];
//!! tabLI.linkedPanel = $(tabLI.itemId);
tabLI.linkedPanel.style.clear = "both"; //firefox hack

//check for the intially active tab
if( (this.options.defaultPanel != '') && (this.options.defaultPanel == pItem)){ //!!
//!! if( (this.options.defaultPanel != '') && (this.options.defaultPanel == tabLI.itemId)){
this.openPanel(tabLI);
}else{
$($(tabLI).linkedPanel).hide();
}

// watch for clicked
$(itemLinks[0]).observe('click', function(event){
element = Event.findElement(event, 'LI');
this.openPanel(element);
Event.stop(event); // like return false;
}.bind(this));
}

},

openPanel: function(tab){
tab = $(tab); // ie hack

if(this.currentTab != ''){
this.currentTab.linkedPanel.hide();
this.currentTab.removeClassName('selected');
}

//set the currently open panel to the new panel
this.currentTab = tab;

tab.linkedPanel.show();
tab.addClassName('selected');
var url = this.options.ajaxUrls[tab.itemId];

// if there is an ajax url defined update the panel with ajax
if(url != undefined){
tab.linkedPanel.update(this.options.ajaxLoadingText);
new Ajax.Request(url,{
onComplete: function(transport) {
tab.linkedPanel.update(transport.responseText);
}
});
}

}
};