var vv;
function init_vv()
	{
	vv=document.getElementById('vv');
	if (!vv) {setTimeout('init_vv()',100);   return 0;}	
	
	}

init_vv();

function show_vv()
	{
 
	if (vv.style.display=="none" || !vv.style.display) vv.style.display="block"
	else vv.style.display="none"
	
	}