/* EXTERNAL LINKS */

function externalLinks() {
if (!document.getElementsByTagName) return;
var anchors = document.getElementsByTagName("a");
for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
}
}
/* END  EXTERNAL LINKS */



/* Text changer */

var textChanger = {
    cpanel : 'textchanger',  //set here the id of the element (div, p) within you want to insert the control panel
    element : 'content',        //set here the id of the element (div, p) within you want to change the text
    defaultFS : 1.1,         //set here the default font size in 'em'
    init: function() {
        var cpel = document.getElementById(textChanger.cpanel);
        var el = document.getElementById(textChanger.element);
        if (cpel == null || el == null) {('The elements with the \"'+textChanger.cpanel+'\" and/or \"'+textChanger.element+'\" ID do not exist in HTML source.');} else {
        var u = document.createElement('ul');
        cpel.appendChild(u);
        u.innerHTML =
        '<span id="headerright1-decrease"><a href="#" title="Decrease font size">-</a></span>&nbsp;&nbsp;'+
        '<span id="headerright1-increase"><a href="#" title="Increase font size">+</a></span>'
        var sz = textChanger.getCookie();
        el.style.fontSize = sz ? sz + 'em' : textChanger.defaultFS + 'em';
        var incr = document.getElementById('headerright1-increase');
        incr.onclick = function(){textChanger.changeSize(1); return false;};
        var decr = document.getElementById('headerright1-decrease');
        decr.onclick = function(){textChanger.changeSize(0); return false;};
        }
    } ,

    changeSize: function(val) {
        var el = document.getElementById(textChanger.element);
        var size = el.style.fontSize.substring(0,3);
        var fSize = parseFloat(size,10);
        if (val == 1) {
            fSize += 0.11;
            if (fSize > 2.0) fSize = 2.0;
        } else {
            fSize -= 0.11;
            if (fSize < 0.5) fSize = 0.5;
        }        
        el.style.fontSize = fSize + 'em';
        textChanger.updateCookie(fSize);
        } ,
        
    updateCookie: function(vl) {
        var today = new Date();
        var exp = new Date(today.getTime() + (365*24*60*60*1000)); //the cookie will expire in one year  
        document.cookie = 'textChangerL=size=' + vl + ';' +'expires=' + exp.toGMTString() + ';' +'path=/';
    } ,

    getCookie: function() {
        var cname = 'textChangerL=size=';    
        var start = document.cookie.indexOf(cname);
        var len = start + cname.length;
        if ((!start) && (cname != document.cookie.substring(0,cname.length))) {return null;}
        if (start == -1) return null;
        var end = document.cookie.indexOf(";",len);
        if (end == -1) end = document.cookie.length;
        return unescape(document.cookie.substring(len, end));
    }
}

/* END TEXT CHANGER   */








/////////////////

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() {
  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;
}

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();
setActiveStyleSheet(title);

/* INSERT */
	function insert(code){
		document.getElementById("message-text").value = document.getElementById("message-text").value + code;
		//document.forms['CommentForm'].focus();
	}

/* END INSERT */

////////////////




    window.onload = function() {
        externalLinks();
        textChanger.init();
    }