function step2()
{
	document.getElementById("step1").style.display = "none";
	document.getElementById("step2").style.display = "block";
	document.getElementById("step3").style.display = "none";
}

function step3()
{
	document.getElementById("step1").style.display = "none";
	document.getElementById("step2").style.display = "none";
	document.getElementById("step3").style.display = "block";
}

function sample2()
{
	document.getElementById("sample2_head").style.display = "none";
	document.getElementById("sample2").style.display = "block";
}

function view(id)
{
	document.getElementById(id+"_view").style.display = "none";
	// document.getElementById(id+"_hide").style.display = "block";
	document.getElementById(id).style.display = "block";
}

function hide(id)
{
	document.getElementById(id+"_view").style.display = "block";
	document.getElementById(id+"_hide").style.display = "none";
	document.getElementById(id).style.display = "none";
}