//------------------------------------------------------------------------------
function toggle_sort(myid)
{

	e1 = document.getElementById('sort1');
	e2 = document.getElementById('sort2');
	e3 = document.getElementById('sort3');

	if (myid=='sort1')
	{
		e2.style.visibility = "visible"; 
		if (e1.value == '0')
		{
			e2.style.visibility = "hidden"; 
			e3.style.visibility = "hidden"; 
			e2.value = "0"; 
			e3.value = "0"; 
		}
	}
	if (myid=='sort2')
	{
		e3.style.visibility = "visible"; 
		if (e2.value == '0')
		{
			e3.style.visibility = "hidden"; 
			e3.value = "0"; 
		}
	}	
	
}

//------------------------------------------------------------------------------
function set_sort(id)
{
	alert('arrange');
}

//------------------------------------------------------------------------------
function cancelEvent()
{
	if (window.event) window.event.cancelBubble = true;
	return false;
}

//------------------------------------------------------------------------------
function yes_or_no()
{
	if (window.confirm('Είστε σίγουρος;')) return true;
	return cancelEvent();
}

//------------------------------------------------------------------------------
function setCode()
{
	var nCode = 13;
	var code=""+Math.random();
	var l = code.length;
	code = code.substr(code.length-nCode);
	code = code.replace(".", "0");
	l = code.length;
	if (l<nCode)
	{
		code = "00000000000000".substr(l-nCode+1) + code;
	}
	el = document.getElementById('codeValue');
	if (el)
	{
		el.value=code;
	}
	el = document.getElementById('codeImg');
	if (el)
	{
		el.src="captcha.php?num="+code;
	}
}


//------------------------------------------------------------------------------
function ExpandItem(obj)
{
	objid = "c" + obj.id;
	obj1 = document.getElementById(objid);
	if (obj1.style.display  != "block")
		obj1.style.display    = "block";
	else
		obj1.style.display    = "none";
}

function toggle_block(secname)
{
	var e;

	e = document.getElementById(secname);
	if (e === null)
		return;
	if (e.style.display == 'none')
	{
		e.style.display='block';
	}
	else
	{
		e.style.display='none';
	}
}

function scores_onkey(evt)
{
	var c;

	c = (evt.which) ? evt.which : evt.keyCode;
	if (c>31 && (c<48 || c>57))
		return false;
	return true;
}

//unused
function show_next(id)
{
	el = document.getElementById(id);
	el.style.visibility = "visible"; 
}