// addEvent function from http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html
function addEvent(obj, type, fn) {
	if (obj.addEventListener)
		obj.addEventListener( type, fn, false );
	else if (obj.attachEvent)
	{
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

addEvent(window, 'load', initPage);

function initPage()
{
	if(!document.getElementById){return;}

	var opt = document.getElementById('options');


	if(opt) {
		opt.style.display ="block";
	}
}

//
var moze, cookie, expl;
var currentstyles;
currentstyles = 'global';
if(document.getElementById) moze=true;
if(navigator.appName.indexOf("Explorer")>-1) expl=true;

function increasefontsize() {
	if(expl) e=event; else e=Event;
	if(e.keyCode==3 || e.keyCode==13 || !e.keyCode) {
	val=getbodysize();
	val+=10;
	if(val>100) val=100;
	setbodysize(val+"%");
	return false;
	}
}

function decreasefontsize() {
	if(expl) e=event; else e=Event;
	if(e.keyCode==3 || e.keyCode==13 || !e.keyCode) {
	val=getbodysize();
	val-=10;
	if(val<70) val=70;
	setbodysize(val+"%");
	return false;
	}
}

function setbodysize(value) {
	obj=document.getElementsByTagName("body");
	obj = obj[0];
	val = value;
	obj.style.fontSize=val;
	if(moze) createCookie("fontsize", val, 365);
}

function getbodysize() {
	obj=document.getElementsByTagName("body");
	bodyobj = obj[0];
	fnt=bodyobj.style.fontSize;
	val=parseInt(fnt.substring(0,fnt.length-1));
	return val;
}

function setActiveStyleSheet(title) {
  // alert("setActiveStyleSheet()");
  currentstyles = 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") == 'global') a.disabled = false;
      if(a.getAttribute("title") == 'lowerpage') a.disabled = false;
      if(a.getAttribute("title") == 'print') a.disabled = false;
      if(a.getAttribute("title") == 'form') a.disabled = false;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
 // alert("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;
 return currentstyles;
}

function getPreferredStyleSheet() {
  // alert("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) {
  //alert("createCookie()");
  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) {
  // alert("readCookie()");
  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) {
  // alert("window load event");
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
  var cookie = readCookie("fontsize");
  val=cookie ? cookie : "76%";
  setbodysize(val);

	var curURL =  location.href.split("#");
	var adjustPage = false;

	if(!adjustPage && curURL[1])	{
		window.location.hash= curURL[1];
		adjustPage = true;
	}

}

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

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

/**/
function externalLinks() {

  var theLinks = document.links;

	if (!document.links)
		{
		document.links = document.getElementsByTagName('a');
		}


var thisDomain = window.location.hostname;


	for (i=0; i < theLinks.length; i++) {
		var thisLink = theLinks[i];
		  if (thisLink.href.indexOf(thisDomain) == -1 && thisLink.href.indexOf("javascript") == -1) {
    			thisLink.target = "_blank";
   			}
  	}
}