function popup(mylink, windowname){
	if(! window.focus)
		return true;
	var href;
	if(typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;
	window.open(href, windowname, 'width=500,height=300,scrollbars=yes');
	return false;
}

function clearGroup(group){
	if(group >= 1 && group <= 8 && document.getElementsByName('clear'+group)[0].checked){
		for(x = 0; document.getElementById('group'+group+'_'+x); x++){
			document.getElementById('group'+group+'_'+x).checked = false;
			document.getElementById('group'+group+'_'+x).disabled = true;
		}
	} else {
		for(x = 0; document.getElementById('group'+group+'_'+x); x++){
			document.getElementById('group'+group+'_'+x).disabled = false;
		}
	}
	refreshBar();
}