var start = textarea.selectionStart;
var end = textarea.selectionEnd;
textarea.value = textarea.value.substring(0, start) + bbcode + textarea.value.substring(end, textarea.value.length);
var start = textarea.selectionStart;
var end = textarea.selectionEnd;
textarea.value = textarea.value.substring(0, start) + bbcode + textarea.value.substring(end, textarea.value.length);