Вставка BB кода

$(document).ready(function(){
    $('.bb_bar a').click(function(){
        var button_id = attribs = $(this).attr("alt");
        button_id = button_id.replace(/[.*]/, '');
        if (/[.*]/.test(attribs)){
            attribs = attribs.replace(/.*[(.*)]/, ' $1');
        }
        else attribs = '';
        var start = '['+button_id+attribs+']';
        var end = '[/'+button_id+']';
        insert(start, end);
        return false;
    });
});
 
function insert(start, end){
    element = document.getElementById('bb');
    if (document.selection){
        element.focus();
        sel = document.selection.createRange();
        sel.text = start + sel.text + end;
    }
    else if (element.selectionStart || element.selectionStart == '0'){
        element.focus();
        var startPos = element.selectionStart;
        var endPos = element.selectionEnd;
        element.value = element.value.substring(0, startPos) +
        start + element.value.substring(startPos, endPos) + end +
        element.value.substring(endPos, element.value.length);
    }
    else {
        element.value += start + end;
    }
}