// Stylesheet stuff
// Heavily adapted from http://www.alistapart.com/articles/alternate/

var didSet = false;

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for (var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function setSheet(title) {
  var i, a, main;
  didSet = true;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("Style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) {
        a.disabled = false;
        createCookie("logStyle",title,365);
      }
    }
  }
}

function setSelectionStyle(styles,title) {
  for (i=0;i<styles.options.length;i++) {
    if (styles.options[i].text==title) {
      styles.options[i].selected=true;
    }
  }
}

function setSelection(title) {
  var i;
  if (document.skinform) {
    setSelectionStyle(document.skinform.styles,title);
  } else {
    if (document.forms) {
      if (document.forms.length>0) {
        if (document.forms[document.forms.length-1].styles) {
          setSelectionStyle(document.forms[document.forms.length-1].styles,title);
        }
      }
    }
  }
}

function setCurrentSheet() {
  var cookie = readCookie("logStyle");
  if (cookie) {
    setSheet(cookie);
    setSelection(cookie);
  }
}

window.onload=setCurrentSheet;
setCurrentSheet();