function checkNotNull()
{
	el=document.forms['mfform'].elements;
	gok=false; pok=false;
	
	for (i=0;(i<el.length);i++)
	{
//		alert(el[i].name);
		if (el[i].checked && el[i].name.substring(0,5)=='GAMES') 
		{
			gok=true; 
			break;
		}
	}

	for (i=0;(i<el.length);i++)
	{
		if (el[i].checked && el[i].name.substring(0,5)=='PACKS') 
		{
			pok=true;
			break;
		}
	}
	if (!pok || !gok)
	{
		alert('You must choose to download at least 1 exercise or game and at least 1 Word Pack!');
		return false;
	}
	

	return true;
}