var whitespace = " \t\n\r";
function CheckFilled(field, prompt) {
  if(isWhitespace(field.value))
    {
    FieldError(field, prompt)
    return false;
    }
  return true;
}

function CheckURL(field, prompt) {
  if(isURL(field.value))
    return true;
  else
    {
    FieldError(field, prompt)
    return false;
    }
}

function FieldError(field, prompt) {
  alert(prompt);
  field.focus();
  return
}

function isEmpty(s) {
  return ((s == null) || (s.length == 0))
}

function isWhitespace (s) {
    var i;
    if (isEmpty(s)) return true;
    for (i = 0; i < s.length; i++) {   
        var c = s.charAt(i);
        if (whitespace.indexOf(c) == -1) return false;
    }
    return true;
}

function write(subject,date,sender,id,level,fid,newdate) {
	document.write("<br><nobr>");
	while(level > 0) {
		document.write(" &nbsp; &nbsp;");
		level=level-1;
	}
	line = "";
	var classnew="forum";
	if (newdate) classnew="newforum";
	if (fid) line = "<a class='"+classnew+"' target='message' href='forummsg.php?private=1&id=" + id + "' title='Click to view message'>" + subject + "</a> - " + sender + " - " + date;
	else line = "<a class='"+classnew+"' target='message' href='forummsg.php?id=" + id + "' title='Click to view message'>" + subject + "</a> - " + sender + " - " + date;
	document.write(line);
	return 1;
}

function writeBR() {
	document.write("<br>");
}

function writeM(subject,date,sender,id,level,fid, posterid,moderator,newdate) {
	document.write("<br><nobr>");
	while(level > 0) {
		document.write(" &nbsp; &nbsp;");
		level=level-1;
	}
	line = "";
	var classlink="plink";
	var classnew="forum";
	if (newdate) classnew="newforum";
	if (memberid==posterid) classlink="plinkown";
	if (fid) line = "<a class='"+classnew+"' target='message' href='forummsg.php?private=1&id=" + id + "' title='Click to view message'>" + subject + "</a> - <a class='"+classlink+"' target='_blank' href='members.php?memberid=" + posterid + "' title='Click to view personality'>" + sender + "</a> - " + date;
	else line = "<a class='"+classnew+"' target='message' href='forummsg.php?id=" + id + "' title='Click to view message'>" + subject + "</a> - <a class='plink' target='_blank' href='members.php?memberid=" + posterid + "' title='Click to view personality'>" + sender + "</a> <img src='../../images/member.jpg'> - " + date;
	if (moderator)
		line = line + " &nbsp; - &nbsp; <a title='Click to delete message' target='message' href='forumdeletemsg.php?delete=1&id="+id+"'><img src='../../images/delete.gif' border=0></a>";
	document.write(line);
	return 1;
}