function tab_view_select (id, tabnum, ori) {
  for (i=0; i<1000; i++) {
    var tab = document.getElementById(id+'_tab_'+i);
    if (tab) {
      if (ori) {
	tab.className = 'tab_view_title_vertical';
      } else {
	tab.className = 'tab_view_title';
      }
    } else {
      break;
    }
  }
  var cn = 'tab_view_title_selected';
  if (ori) {
    cn = 'tab_view_title_vertical_selected'
  }
  document.getElementById(id + '_tab_' + tabnum).className = cn;

  for (i=0; i<1000; i++) {
    var content = document.getElementById(id+'_content_'+i);
    if (content) {
      content.className = 'tab_view_content';
    } else {
      break;
    }
  }
  cn = 'tab_view_content_selected';
  if (ori) {
    cn = 'tab_view_content_vertical_selected';
  }
  document.getElementById(id + '_content_' + tabnum).className = cn;
}