// START Style Sheet Handling
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;
    }
  }

// loop thur the IFRAME
  var CCiframe = document.getElementById("CalcFrame")
  if (CCiframe) {
	  for(i=0; (a = window.frames["CalcFrame"].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;
}

// Start changes by rich
if (window.addEvent == null) {
    function addEvent(elem,event_type,func,usecapture) {
        if (elem.addEventListener) {
            elem.addEventListener(event_type,func,usecapture);
            return true;
        }
        else if (elem.attachEvent) {
            var retcode = elem.attachEvent('on'+event_type,func);
            return retcode;
        }
        else {
            elem['on'+event_type] = func;
        }
    }
}

function getSavedStyleSheet(evt) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

function setSavedStyleSheet(evt) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

addEvent(window,'load',getSavedStyleSheet,false);
addEvent(window,'unload',setSavedStyleSheet,false);
// End changes by rich

// End Style Sheet Handling