$("a.delete").click(function(e){
    e.preventDefault();
    var href = $(this).attr('href');
    custom_confirm('ok ?:',
        function(){
                location.href = href;
        }
    );
});

function custom_confirm(prompt, action, title){
    if (title === undefined) title = "Are you sure?";
        if ($("#confirm").length == 0){
                $("#main div.inner").append('<div id="confirm" title="' + title + '">' + prompt + '</div>');
                $("#confirm").dialog({buttons: {'Proceed': function(){ $(this).dialog('close'); action(); }, Cancel: function(){ $(this).dialog('close'); }}});
        }
        else {
                $("#confirm").html(prompt);
                $("#confirm").dialog('open');
    }
}