function openpopup(popurl){
var winpops=window.open(popurl,"","width=340,height=300")
}
function callHelp(topic)
{
	lng = 'NL';
	// map certain languages to english online help:
	if (lng == "PT" || lng == "SW")
		help_language = "GB"
	else
		help_language = lng
	HelpURL="http://www.tlnplanner.nl/help/webhelp_" + help_language +"/start.htm#"+topic;
	win_height	= 550
	win_width	= 820 //780
	win_top		= (screen.availHeight/2) - (win_height/2)
	win_left	= (screen.availWidth/2) - (win_width/2)
	options = "width="+ win_width +",height="+ win_height +",left="+win_left+",top="+ win_top +",resizable=yes,scrollbars=yes,status=no"
	hilfefenster=window.open(HelpURL,"",options)
	hilfefenster.focus()
}