// JScript File


    // create array from comma delimited vals
    // either highlight snav or hide other content :)
    function ActionArray(str,boolVal)
    {
        // if boolval is true the is content, not snav
        
        var NumberString = str;
        var MyArray = NumberString.split(",");
        var strClassName = 'HideContent';

        if (boolVal) {
            var strClassName = 'SnavOff';
        }

        for (i=0; i<MyArray.length; i++) 
        {
            if (boolVal) { //snav
                document.getElementById("Snav"+ MyArray[i]).className = strClassName;
            } else { //content
                document.getElementById(MyArray[i]).className = strClassName;
            }
        }    
    }    


    // used to show hide the relevant content and highlight secondary nav as required
    function ShowHide(divOn,divsOff,snavOn,snavsOff)
    {
        // hide content divs using div array
        ActionArray(divsOff,false)
        ActionArray(snavsOff,true)

        // show content, highlight snav item
        document.getElementById(divOn).className = 'ShowContent';
        document.getElementById("Snav"+ snavOn).className = 'SnavOn';
    }
    
    // font size control
    function fontsizeup() {
      active = getActiveStyleSheet();
      switch (active) {
        case 'A--' : 
          setActiveStyleSheet('A-');
          break;
        case 'A-' : 
          setActiveStyleSheet('A');
          break;
        case 'A' : 
          setActiveStyleSheet('A+');
          break;
        case 'A+' : 
          setActiveStyleSheet('A++');
          break;
        case 'A++' :
          break;
        default :
          setActiveStyleSheet('A');
          break;
      }
    }

    function fontsizedown() {
      active = getActiveStyleSheet();
      switch (active) {
        case 'A++' : 
          setActiveStyleSheet('A+');
          break;
        case 'A+' : 
          setActiveStyleSheet('A');
          break;
        case 'A' : 
          setActiveStyleSheet('A-');
          break;
        case 'A-' : 
          setActiveStyleSheet('A--');
          break;
        case 'A--' : 
           break;
        default :
          setActiveStyleSheet('A--');
          break;
      }
    }

    function setActiveStyleSheet(title) {
      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;
        }
      }
    }

    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 getPreferredStyleSheet() {
      return ('A-');
    }

    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;
    }

    window.onload = function(e) {
      var cookie = readCookie("style");
      var title = cookie ? cookie : getPreferredStyleSheet();
      setActiveStyleSheet(title);
    }

    window.onunload = function(e) {
      var title = getActiveStyleSheet();
      createCookie("style", title, 365);
    }

    var cookie = readCookie("style");
    var title = cookie ? cookie : getPreferredStyleSheet();
    if (title == 'null') {
      title = getPreferredStyleSheet();
    }

    setActiveStyleSheet(title);