function hpopupblank(vurl, vtarget, vhei, vwid, vres) {

	NewWinTop = (screen.availHeight / 2) - (vhei / 2);
	NewWinLeft = (screen.availWidth / 2) - (vwid / 2);

	window.open(vurl, + vtarget, + "menubar=no, resizable=" + vres + ",scrollbars=no, status=yes, height=" + vhei + ",width=" + vwid + ", toolbar=no, left=" + NewWinLeft + ", top=" + NewWinTop);
	}

function hpopup(vurl, vtarget, vhei, vwid, vres) {

	NewWinTop = (screen.availHeight / 2) - (vhei / 2);
	NewWinLeft = (screen.availWidth / 2) - (vwid / 2);

	window.open(vurl, + vtarget, + "menubar=yes, resizable=" + vres + ",scrollbars=yes, status=yes, height=" + vhei + ",width=" + vwid + ", toolbar=yes, left=" + NewWinLeft + ", top=" + NewWinTop);
	}