Link header parser (JavaScript)

Parser.js

var PageLinks = function(linkHeader) {
  var ProfileRel = "https://tent.io/rels/profile";
  var final = [];
  var links = linkHeader.split(",");
  if (links.length < 2)
    links[0] = linkHeader;
  for (link in links) {
    link = links[link];
    var segments = link.split(";");
    if (segments.length < 2)
      continue;
    var linkPart = segments[0].trim();
    if (linkPart.indexOf("<") != 0 || linkPart.indexOf(">") != linkPart.length - 1)
      continue;
    linkPart = linkPart.substring(1, linkPart.length - 1);
    for (var i = 1; i < segments.length; i++) {
      var rel = segments[i].trim().split("=");
      if (rel.length < 2 || "rel" != rel[0])
        continue;
      var relValue = rel[1];
      if (relValue.indexOf("\"") == 0 && relValue.indexOf("\"") == 0)
        relValue = relValue.substring(1, relValue.length - 1);
      if (ProfileRel == relValue)
        final.push(linkPart);
    }
  }
  return final;
}