function hiddenLayer() 
{
	document.getElementById("feedback").style.visibility = "hidden";
}

function showLayer()
{
	document.getElementById("feedback").style.visibility = "visible";
}
	
var Opened=false;
function OpenWindow(PageSrc,Top,Left,Width,Height)
{
	Features="top="+Top+",left="+Left+",width="+Width+",height="+Height+",toolbar=no,menubar=no,location=no,directories=no,scrollbars=no,resizable=0";
	if ((!Opened) || (NewWin.closed))
	{
		Opened=true;
		NewWin=window.open(PageSrc,"NewWindow",Features);
		NewWin.focus();
	}
	else
	{
		if ((Opened) || (!NewWin.closed))
		{
			NewWin.location=PageSrc;
			NewWin.focus();
		}
	}
	hiddenLayer();
}