// Thanks to Zeldman.com and alistapart.com!


// toggle visibility

function toggle( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == ""){
  				target.style.display = "none";
  			} else {
  				target.style.display = "";
  			}
  	}
}


/* ----------------------------------------------------------*/

var TheBook=null;

function ShowBookNote(event,id) 
{
	if (TheBook) {
		HideBookNote(TheBook);
		}
	$(id).style.display = "block";
	TheBook=id;

	};
	
function HideBookNote(id) 
{	
	$(id).style.display="none";
	TheBook=null;
/*
	var obj = document.getElementById( id );	
	if (obj) {
		obj.style.display = "none";
		}
	
	TheBook=null;
*/
	};
	
/* ----------------------------------------------------------*/

function Stretch(id)
{		
	if ($(id).style.display=="" || $(id).style.display=="none") {
		$(id).style.display="inline";
		}
	else {
		$(id).style.display="none";
		}
	};
	
function Stretch2(id)
{		
	var label='l'+id;
	
		$(id).style.display="inline";
		$(label).style.display="none";
		}
function UnStretch2(id)
{
	var label='l'+id;
		$(id).style.display="";
		$(label).style.display="inline";
		
	};

function _Show( id ) {
			$(id).style.display = "block";
		};
		
function _Hide( id ) {
			$(id).style.display = "none";
		};
		
		
function ShowMovie(id)
{
	var theMovies=new Array('m2008','m2007','m2006','m2005','m2004','m2003','m2002','m2001','m2000');
	var x;
	for (x=0;x<theMovies.length;x++) {
		$(theMovies[x]).hide();
		}
	$(id).style.display="block";
	}

/* ----------------------------------------------------------*/

// switch styles

function setActiveStyleSheet(title) {
  var i, a, main;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        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") &&
        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") &&
        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);