var calcWin = null;

function poponclick(newPop, wid, ht)
{
if (isNaN(wid)) {wid=300}
if (isNaN(ht)) {ht=300}
if (calcWin && calcWin.open && !calcWin.closed) {calcWin.focus();}
else {
	calcWin = null;
	calcWin = window.open (newPop, "pWin",
"location=1,width=" + wid + ",height=" + ht);
	}
}