function overVak(a)
{
	a.style.cursor = "pointer";
}

function clickVak(v_c, v, a)
{
	if(document.getElementById(v_c).className == 'item') { 
		document.getElementById(v_c).className='item active'; 
		a.style.textDecoration = "none";
	} else { 
		document.getElementById(v_c).className='item'; 
		a.style.textDecoration = "underline";
	}
	
	if (document.getElementById(v).style.display == 'none') { 
		document.getElementById(v).style.display = 'block'; 
	} else { 
		document.getElementById(v).style.display = 'none'
	}
}