// 2006 Net Efficiency
//  Based on Paul Snowden's work as written on A List Apart (www.alistapart.com)
//  <http://www.alistapart.com/articles/alternate/>



var browserName = navigator.appName;
var browserVer = parseInt(navigator.appVersion);
var versionblur = "";
var msie4 = (browserName == "Microsoft Internet Explorer" && browserVer >= 4);
if ((browserName == "Netscape" && browserVer >= 3) || msie4 || browserName=="Konqueror" || browserName=="Opera") {versionblur = "n3";} else {versionblur = "n2";}
// Blurring links:
function blurLink(theObject)	{	//
	if (msie4)	{theObject.blur();}
}
		
		


function config(){
var version
version = navigator.userAgent.indexOf('Netscape');
if (version < 5)
  {
     return true;
  }
}

function SetStyleSheet(title) {
  var i, a, main;
  if (title) {
    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;
      }
    }
  }
}


function SetContrast(conviz) {
	var i;
	i = document.body.className;
	if ((conviz=='cnormal')&&(i != 'cnormal')) document.body.attributes.getNamedItem("class").nodeValue = "cnormal";
	if ((conviz=='chiviz')&&(i != 'chiviz')) document.body.attributes.getNamedItem("class").nodeValue = "chiviz";
	if ((conviz=='cblkwht')&&(i != 'cblkwht')) document.body.attributes.getNamedItem("class").nodeValue = "cblkwht";
}

	

function getActiveStyleSheet() {
    var i, a;
    for(i=0; (a = document.getElementsByTagName('link')[i]); i++) {
      if(a.getAttribute('rel').indexOf('style') != -1 && a.getAttribute('title') && !a.disabled) return a.getAttribute('title');
    }
    return null;
}

function getActiveContrast() {
    var i;
	i = document.body.className;
	if (i != (''||null)){
		return i;
	}
    return null;
}





function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName('link')[i]); i++) {
    if(a.getAttribute('rel').indexOf('style') != -1
       && a.getAttribute('rel').indexOf('alt') == -1
       && a.getAttribute('title')
       )
       return a.getAttribute('title');
  }
  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 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 eraseCookie(name) {
	createCookie(name,'',-1);
}



window.onload = function(e) {
  config();
  var cookie = readCookie('themeName');
  var title = cookie ? cookie : getPreferredStyleSheet();
  SetStyleSheet(title);
  
  var contrastCookie = readCookie('contrastName');  // TK NEW
  var contrast = contrastCookie ? contrastCookie : 'cnormal'; // TK NEW
  SetContrast(contrast); // TK NEW
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie('themeName', title, 365);

  var contrast = getActiveContrast(); // TK NEW
  createCookie('contrastName',contrast,365); // TK NEW
}