function popupWin(sUrl,lWinNum,type) {
	if (type == "artist") {
		w = 399;
		h = 508;
	}
	else if (type == "glossary") {
		w = 369;
		h = 333;
	}
	else if (type == "artwork") {
		w = 669;
		h = 540;
	}
	else if (type == "timeline") {
		w = 752;
		h = 377;
	}
	else if (type == "investigate") {
		w = 810;
		h = 622;
	}
	else if (type == "credits") {
		w = 377;
		h = 508;
	}
	else {
		w = 1;
		h = 1;
	}
	window[lWinNum] = window.open(sUrl,lWinNum,'width='+w+',height='+h+',scrollbars=no,resizable=no,status=no,menubar=no,toolbar=no'); 
	window[lWinNum].focus();
}