var isselect="R1";
function SH(id)
{
	if(document.getElementById(id).style.display=="" ||document.getElementById(id).style.display=="none")
	{
		document.getElementById(id).style.display="block";
		if(isselect!="" && isselect!=id) document.getElementById(isselect).style.display="none";
		isselect=id;
	}
	else
	{
		document.getElementById(id).style.display="none";
	}
}