function openttherror(art) {
	  nwindow=window.open('/tth_error.shtml?'+art,'image','toobar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=no,width='+450+',height='+180);
	  ndoc = nwindow.document;
	  nwindow.focus();
	  ndoc.close();
	  self.nwindow = nwindow;
}

function _show(name) {
	tmp = layer(name);
	tmp.show();
	tmp.object.style.display='block';
}

function _hide(name) {
	tmp = layer(name);
	tmp.object.style.display='none';
	tmp.hide();
}

function showtab(show_name,hide_name) {
	_hide(hide_name);
	_hide(hide_name+'content');
	_show(show_name);
	_show(show_name+'content');

}