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) {
  //check for print friendly
  
  var checkPrint = ParseQueryString('printfriendly');
  if (checkPrint == "true")
  {
  	//use print friendly style
  	setActiveStyleSheet('print');
  }
  else   //otherwise use style from the cookie
  {
  
  
 	var cookie = readCookie("style");
  	var title = cookie ? cookie : getPreferredStyleSheet();
	
  	setActiveStyleSheet(title); 
  }
 
}

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

function ParseQueryString(val) {
	qs = window.location.search.substring(1);
	splitQs = qs.split("&");
	for (i=0;i<splitQs.length;i++) {
		splitItem = splitQs[i].split("=");
		if (splitItem[0] == val) {
			return splitItem[1];
		}
	}
}



  var checkPrint = ParseQueryString('printfriendly');
  if (checkPrint == "true")
  {
  	//use print friendly style
  	setActiveStyleSheet('print');
  }
  else   //otherwise use style from the cookie
  {
  	
 	 var cookie = readCookie("style");
  	var title = cookie ? cookie : getPreferredStyleSheet();
  	
  	if (title == 'print')
  	{
  		//reset to default
  		title='default';
  	}
  	setActiveStyleSheet(title); 
  }
//var cookie = readCookie("style");
//var title = cookie ? cookie : getPreferredStyleSheet();
//setActiveStyleSheet(title);