var messages = '';
var errors = '';



function getCursorPosition(id) {
   var textarea = document.getElementById(id);
   if (typeof textarea.selectionStart != 'undefined' )
      return textarea.selectionStart;
   
   textarea.focus();
   var range = textarea.createTextRange();
   range.moveToBookmark(document.selection.createRange().getBookmark());
   range.moveEnd('character', textarea.value.length);
   return textarea.value.length - range.text.length; 
}
 
function setCursorPosition(id, start, end) {
   var textarea = document.getElementById(id);
   end = end || start;
   textarea.focus();
   if (textarea.setSelectionRange) textarea.setSelectionRange(start, end);
   else if (document.selection) {
      var range = textarea.createTextRange();
      range.moveStart('character', start);
      range.moveEnd('character', - textarea.value.length + end);
      range.select();
   }
}
 
function add_smil(string, id) {
   var text_value = document.getElementById(id).value;
   var position = getCursorPosition(id);
 
   var string_start = text_value.substring(0, position);
   var string_end = text_value.substring(position);
 
   document.getElementById(id).value = string_start + string + string_end;
   setCursorPosition(id, position + string.length, position + string.length);
} 



onLoad = function()
{
    if (errors) {
        alertError(errors);
    } else if (messages) {
        alertSuccess(messages);
    }
    $j('a[rel*=popup]').facebox();
}

alertError = function(message)
{
    jQuery.facebox("<div class=\"alert alertError\"><p>" + message + "</p></div>");
}

alertSuccess = function(message)
{
    jQuery.facebox("<div class=\"alert alertSuccess\"><p>" + message + "</p></div>");
    setTimeout("$j.facebox.close()", 3500);
}

id = function(id)
{
    return document.getElementById(id);
}