// ----------------------------------------------
// StyleSwitcher functions written by Paul Sowden
// http://idontsmoke.co.uk/2002/ss/
// - - - - - - - - - - - - - - - - - - - - - - -
// For the details, visit ALA:
// http://www.alistapart.com/stories/alternate/
//
// nifty StyleSwitcher scripts modified by Aaron Jones 10/10/2002
//
// - - - - - - - - - - - - - - - - - - - - - - -
//
// UPDATED: 4th April, 2004 @ 14:46
// This version of StyleSwitcher was copied from
// WIRED.com, and then updated to work with the
// URL http://www.sfe.co.uk/ by Pete Fairhurst,
// Technical Developer for SfE Ltd.
//
// PLEASE NOTE:
// This is a straight-forward compatability hack,
// and no credit is taken for the techniques
// implemented in this (modified) JavaScript
// file.  Please refer to the URLs at the top of
// this document for full details and original
// credits.  Thank you!
//
// ----------------------------------------------

function setActiveStyleSheet(title, reset) {
  var i, a, main;
  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;
    }
  }
  if (reset == 1) {
	  createCookie("sfe_text", title, 365);
  }
}

function setStyle() {
	var style = readCookie("sfe_text");
	if (style != null) {
		setActiveStyleSheet(style, 0);
	}
}


// ----------------------------------------------
// Cookie functions
// ----------------------------------------------

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+";domain=.wired.com;path=/;";
  document.cookie = name+"="+value+expires+";domain=.sfe.co.uk;path=/;";
}

// ----------------------------------------------

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;
}