$(window).load(function() {
    $('a[id="book8"]').click(function() {
        window.open("http://www.blackfriarsrestaurant.com/blkform.htm", "mywindow1", "scrollbars=1,resizable=1,width=560,height=500");
        return false;
    });
    $('a[id="book8plus"]').click(function() {
        window.open("http://www.blackfriarsrestaurant.com/old-blkform.htm", "mywindow2", "scrollbars=1,resizable=1,width=560,height=500");
        return false;
    });
});