// Reset images to "normal" state.
function TextResizeInterface(title) {
  document.getElementById("txtSmallTop").src = "/CCL/images/EN/icon_text_top_s-2.gif";
  document.getElementById("txtMediumTop").src = "/CCL/images/EN/icon_text_top_m.gif";
  document.getElementById("txtLargeTop").src = "/CCL/images/EN/icon_text_top_l.gif";
  document.getElementById("txtXlargeTop").src = "/CCL/images/EN/icon_text_top_xl.gif";
  document.getElementById("txtSmallBot").src = "/CCL/images/EN/icon_text_top_s-2.gif";
  document.getElementById("txtMediumBot").src = "/CCL/images/EN/icon_text_top_m.gif";
  document.getElementById("txtLargeBot").src = "/CCL/images/EN/icon_text_top_l.gif";
  document.getElementById("txtXlargeBot").src = "/CCL/images/EN/icon_text_bottom_xl.gif";

  // Set "lit" state of active text size image.
  switch(title) {
  	case "small":
  		document.getElementById("txtSmallTop").src = "/CCL/images/EN/icon_text_top_s_lit.gif";
  		document.getElementById("txtSmallBot").src = "/CCL/images/EN/icon_text_top_s_lit.gif";
  		break;
  		
  	case "medium":
  		document.getElementById("txtMediumTop").src = "/CCL/images/EN/icon_text_top_m_lit.gif";
  		document.getElementById("txtMediumBot").src = "/CCL/images/EN/icon_text_top_m_lit.gif";
  		break;
  		
  	case "large":
  		document.getElementById("txtLargeTop").src = "/CCL/images/EN/icon_text_top_l_lit.gif";
  		document.getElementById("txtLargeBot").src = "/CCL/images/EN/icon_text_top_l_lit.gif";
  		break;
  		
  	case "extralarge":
  		document.getElementById("txtXlargeTop").src = "/CCL/images/EN/icon_text_top_xl_lit.gif";
  		document.getElementById("txtXlargeBot").src = "/CCL/images/EN/icon_text_bottom_xl_lit.gif";
  		break;
  		
  	default:
  		document.getElementById("txtMediumTop").src = "/CCL/images/EN/icon_text_top_m_lit.gif";
  		document.getElementById("txtMediumBot").src = "/CCL/images/EN/icon_text_top_m_lit.gif";
  }

}

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;
    }
  }
  
  if(document.getElementById("txtSmallTop")) {
  	TextResizeInterface(title);
  }
}

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

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

function Init(e) {
	TextResizeInterface(title);
}