/* Обсяг торгів */
function tab1()
{
	document.getElementById('t1').style.display = 'block';
	document.getElementById('t2').style.display = 'none';
}

/* Капіталізація ПФТС */
function tab2()
{
	document.getElementById('t1').style.display = 'none';
	document.getElementById('t2').style.display = 'block';
}

/* Індекси ПФТС */
function tab3()
{
	document.getElementById('t3').style.display = 'block';
	document.getElementById('t4').style.display = 'none';
}

/* Market Trends. Акції */
function tab4()
{
	document.getElementById('t3').style.display = 'none';
	document.getElementById('t4').style.display = 'block';
}

function overlay()
{
	if(document.getElementById('first').style.zIndex<document.getElementById('second').style.zIndex)
		{
			document.getElementById('first').style.zIndex = 1;
			document.getElementById('second').style.zIndex = 0;
		}
	else
		{
			document.getElementById('first').style.zIndex = 0;
			document.getElementById('second').style.zIndex = 1;
		}
}

function overlay2()
{
	if(document.getElementById('tre').style.zIndex<document.getElementById('chet').style.zIndex)
		{
		document.getElementById('tre').style.zIndex = 1;
		document.getElementById('chet').style.zIndex = 0;
		}
	else
		{
			document.getElementById('tre').style.zIndex = 0;
			document.getElementById('chet').style.zIndex = 1;
		}
}