/**
 * Tabledrag doesn't hide columns when fieldset is collapsed
 * @see: http://drupal.org/node/303189
 *
 * Unter oben angegebener URL gibt es einen patch für core (d7). 
 * Damit drupal nicht gepatcht werden muss wird die entsprechende js-Funktion
 * hiermit überschrieben.
 *
 * Hide the columns containing form elements according to the settings for
 * this tableDrag instance.
 */

Drupal.tableDrag.prototype.hideColumns = function(){
 for (var group in this.tableSettings) {
   // Find the first field in this group.
   for (var d in this.tableSettings[group]) {
     var field = $('.' + this.tableSettings[group][d]['target'] + ':first', this.table);
     if (field.size() && this.tableSettings[group][d]['hidden']) {
       var hidden = this.tableSettings[group][d]['hidden'];
       var cell = field.parents('td:first');
       break;
     }
   }

   // Hide the column containing this field.
   if (hidden && cell[0]) {
     // Add 1 to our indexes. The nth-child selector is 1 based, not 0 based.
     // Match immediate children of the parent element to allow nesting.
     var i = $('td', cell.parent()).index(cell.get(0)) + 1;
     $('> thead > tr, > tbody > tr, > tr', this.table).each(function(){
       var row = $(this);
       var index = i;

       // Adjust the index to take into account colspans.
       row.children().each(function(n) {
         if (n < index) {
           index -= (this.colSpan && this.colSpan > 1) ? this.colSpan - 1 : 0;
         }
       });
       if (index > 0) {
         cell = row.children(':nth-child(' + index + ')');
         if (cell[0].colSpan > 1) {
           // If this cell has a colspan, simply reduce it.
           cell[0].colSpan = cell[0].colSpan - 1;
         }
         else {
           cell.css('display', 'none');
         }
       }
     });
   }
 }
};