function showhide(name1)
{
	var i=1
	for (i=1;i<=4;i++)
	{
		document.getElementById(i).style.display = "none";
	}
	document.getElementById(name1).style.display = "block";  

}

function hide(name1)
{
	var i=1
	for (i=1;i<=4;i++)
	{
		document.getElementById(i).style.display = "none";
	}

}