function timedMsg()
{
	tlmt=900000 //15 minutes
	tlmt2=960000 //16 minutes
	var t=setTimeout("shalrt()",tlmt)
	var t2=setTimeout("shalrt()",tlmt2)
}
function shalrt()
{
	sasw=(screen.width/2)-125;
	sash=(screen.height-50)/2-50;
	showalert.style.left=sasw+"px";
	showalert.style.top=sash+"px";
	if (showalert.style.display=="")
	{ showalert.style.display="none"; }
	else
	{ showalert.style.display=""; }
}