var selected_items = 0

function check_selects_items()
{
	var boxes = document.getElementsByName("r_id[]");
	for(i=0; i<boxes.length; i++)
	{
		if(boxes[i].checked) 
			selected_items++
	}
	set_btns();
}

function be2(el)
{
//	check_selects_items();
	cform = el.form
	if(el.checked)
	{
		selected_items++
	}
	else
	{
		selected_items--
	}

	set_btns();
}

function set_btns()
{
	var b_edit 		= document.getElementById( "b_action_edit" );
	var b_delete 	= document.getElementById( "b_action_delete" );
	var b_details 	= document.getElementById( "b_action_details" );
	var b_track 	= document.getElementById( "b_action_track" );
	var b_return 	= document.getElementById( "b_action_return" );
	if(selected_items == 0)
	{
		if(b_edit != null) b_edit.disabled = true;
		if(b_delete != null) b_delete.disabled = true;
		if(b_details != null) b_details.disabled = true;
		if(b_track != null) b_track.disabled = true;
		if(b_return != null) b_return.disabled = true;
	}
	else if(selected_items == 1)
	{
		if(b_edit != null) b_edit.disabled = false;
		if(b_delete != null) b_delete.disabled = false;
		if(b_details != null) b_details.disabled = false;
		if(b_track != null) b_track.disabled = false;
		if(b_return != null) b_return.disabled = false;
	}
	else
	{
		if(b_edit != null) b_edit.disabled = true;
		if(b_delete != null) b_delete.disabled = false;
		if(b_details != null) b_details.disabled = true;
		if(b_track != null) b_track.disabled = true;
		if(b_return != null) b_return.disabled = true;
	}
}
function mformat(n,zn)
{
	z = "0000000000";
	n = parseFloat(n);
	p = Math.pow(10, zn);
	s = String(Math.round(n*p)/p);
	s = (s.match(/\./)? s+z : s+"."+z).match('\\d+\\.\\d{'+zn+'}');
	return s;
}