function open_popup(winurl, winname, winparams) {
	if (winname == ''|| winname == null) { winname = 'eformpopup'; }
	if (winparams == ''|| winparams == null) { winparams = 'menubar=0,toolbar=0,directories=0,status=0,scrollbars=1,resizable=1,alwaysRaised=yes,width=615,height=550,top=0,left=0'; }
	window.open(winurl, winname, winparams)
}