function showhide(id)
{
	if(id == "div1")
	{
		document.getElementById(id).style.display = "block";
		document.getElementById("div2").style.display = "none";
		document.getElementById("div3").style.display = "none";
	}

	if(id == "div2")
	{
		document.getElementById(id).style.display = "block";
		document.getElementById("div1").style.display = "none";
		document.getElementById("div3").style.display = "none";
	}

	if(id == "div3")
	{
		document.getElementById(id).style.display = "block";
		document.getElementById("div1").style.display = "none";
		document.getElementById("div2").style.display = "none";
	}
}