function popup(fname,fwidth, fheight)
{
	var xpos = (screen.width- fwidth)/2;
	var ypos = (screen.height- fheight)/2;
	window.open(fname,'popup','status=no,scrolling,width=' + fwidth +',height=' + fheight + ',left=' + xpos + ',top=' + ypos);
	return false;
}
function popupscrolling(fname,fwidth, fheight)
{
	var xpos = (screen.width- fwidth)/2;
	var ypos = (screen.height- fheight)/2;
	window.open(fname,'popup','status=yes,scrollbars=yes,toolbar=yes,width=' + fwidth +',height=' + fheight + ',left=' + xpos + ',top=' + ypos);
	return false;
}