Prevent an exception with jQuery UI Tabs
$("#tabs").tabs("add","#tabContent0","CLICK ME TO CHANGE PAGE",0);
$('a[href="#tabContent0"]').attr("href","javascript:window.location='http://www.google.co.uk';");

$('#tabs').bind('tabsselect', function(event, ui) {

if(ui.index<2) //ignore this will change to get current tab count -1 (so the end tab is left as it is
{
        window.location=$('#'+ui.tab).attr("href"); //attr href is undefined, how do i use ui.tab properly to get the right url
        return false;
}

});

$("#tabs").tabs("add","#tabContent0","CLICK ME TO CHANGE PAGE",0);
$('a[href="#tabContent0"]').click(function() {
    document.location='http://www.google.co.uk/';
});

$('#example').tabs({
    select: function(event, ui) {
        var url = $.data(ui.tab, 'load.tabs');
        if( url ) {
            location.href = url;
            return false;
        }
        return true;
    }
});