function list_resort(sortby, formid)
{
	var dirby = document.getElementById('dir_by');
	var orderby = document.getElementById('order_by');
	
	if(orderby.value == sortby)
	{
		dirby.value = (dirby.value == 'asc') ? 'desc' : 'asc';
	} else
	{
		orderby.value = sortby;
	}
	
	document.getElementById(formid).submit();
}

function masscheck(el, nam, acti)
{
	var chk = (el.checked) ? true : false;
	
	var i;
	var a = document.getElementsByTagName('input');
	for(i=0; i < a.length; i++)
	{
		if(a[i].type == "checkbox")
		{	
			if(a[i].name.indexOf(nam) == 0)
			{
				a[i].checked = chk;
				if(acti)
				{
					acti(a[i]);
				}
			}
		}
	}
}