[jQuery] AJAX data in IE

[jQuery] AJAX data in IE


hi crew,
as ususally I have strange problem..take a look to code:
$(function(){
    $('.tablesorter').tablesorter({widgets: ['zebra']});
    $('#subMenu a').click(function(){
    var trida = $(this).attr('href');
    console.log(trida);
    $('#content>*').remove();
        $.ajax({
            url: 'pilots.php',
            cache: false,
            type: 'POST',
            dataType: 'html',
            data: 'trida='+trida,
            success: function(html){
                    $('#content').append(html)}
            });
    return false;
    });
});
this code works great, but not in IE. Problem is causing by value
"data".
If I set: data: 'trida=15', than everything goes OK, but if I set
valeu from variable, IE return only a little part of requesting page.
So what is wrong in my AJAX code?