How to load pages in same tab with single iframe

[NishaLijo]

Hi ,

I want to keep only one tab at a time.I used this script for displaying tabs.How can i do that.(I am using the same as in example explorer)

<script type="text/javascript">
        var loadPage = function(tabPanel, node) {
            var tab = tabPanel.getItem(node.id);
            if (!tab) {
                tab = tabPanel.add({
                    id: node.id,
                    title: node.text,
                    closable: true,
                    autoLoad: {
                        showMask: true,
                        url: node.attributes.href,
                        mode: 'iframe',
                        maskMsg: 'Loading ' + node.attributes.href + '...'
                    },
                    listeners: {
                        update: {
                            fn: function(tab, cfg) {
                                cfg.iframe.setHeight(cfg.iframe.getSize().height - 20); 
                            },
                            scope: this,
                            single: true
                        }
                    }
                });                
            }
            tabPanel.setActiveTab(tab);
        }
    </script>