function popup(mylink,windowname,w,h){
	var href;
	if (! window.focus)return true;
	if (typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;
	if (w == "")
		w=window.width;
	if (h == "")
		h=window.height;

	window.open(href,windowname,'scrollbars=yes,resizable=yes,menubar=no,status=no,toolbar=no,width=' + w + ',height=' + h + 'screenx=0,screeny=0,top=0,left=0');
	return false;
}

var winlg;
function openWinLarge(file) {
	winlg = window.open(file,"winlarge","scrollbars=yes,resizable=yes,menubar=yes,status=yes,toolbar=yes,width=690,height=480,screenx=0,screeny=0,top=0,left=0");
    	winlg.focus();
}