function hide()
{
	document.getElementById("msg1").style.visibility = "hidden";
	document.getElementById("msg2").style.visibility = "hidden";
	document.getElementById("msg3").style.visibility = "hidden";
	document.getElementById("msg4").style.visibility = "hidden";
}
function show1()
{
	if(document.getElementById("msg1").style.visibility == "hidden")
	{
		document.getElementById("msg1").style.visibility = "visible";
		document.getElementById("msg2").style.visibility = "hidden";
		document.getElementById("msg3").style.visibility = "hidden";
		document.getElementById("msg4").style.visibility = "hidden";
	}
	else
	{
		document.getElementById("msg1").style.visibility = "hidden";
		document.getElementById("msg2").style.visibility = "hidden";
		document.getElementById("msg3").style.visibility = "hidden";
		document.getElementById("msg4").style.visibility = "hidden";
	}
}
function show2()
{
	if(document.getElementById("msg2").style.visibility == "hidden")
	{
		document.getElementById("msg2").style.visibility = "visible";
		document.getElementById("msg1").style.visibility = "hidden";
		document.getElementById("msg3").style.visibility = "hidden";
		document.getElementById("msg4").style.visibility = "hidden";
	}
	else
	{
		document.getElementById("msg2").style.visibility = "hidden";
		document.getElementById("msg1").style.visibility = "hidden";
		document.getElementById("msg3").style.visibility = "hidden";
		document.getElementById("msg4").style.visibility = "hidden";
	}
}
function show3()
{
	if(document.getElementById("msg3").style.visibility == "hidden")
	{
		document.getElementById("msg3").style.visibility = "visible";
		document.getElementById("msg2").style.visibility = "hidden";
		document.getElementById("msg1").style.visibility = "hidden";
		document.getElementById("msg4").style.visibility = "hidden";
	}
	else
	{
		document.getElementById("msg3").style.visibility = "hidden";
		document.getElementById("msg2").style.visibility = "hidden";
		document.getElementById("msg1").style.visibility = "hidden";
		document.getElementById("msg4").style.visibility = "hidden";
	}
}
function show4()
{
	if(document.getElementById("msg4").style.visibility == "hidden")
	{
		document.getElementById("msg4").style.visibility = "visible";
		document.getElementById("msg2").style.visibility = "hidden";
		document.getElementById("msg3").style.visibility = "hidden";
		document.getElementById("msg1").style.visibility = "hidden";
	}
	else
	{
		document.getElementById("msg4").style.visibility = "hidden";
		document.getElementById("msg2").style.visibility = "hidden";
		document.getElementById("msg3").style.visibility = "hidden";
		document.getElementById("msg1").style.visibility = "hidden";
	}
}