function setCookie(name,value,days)
{
if (days)
  {
  var date=new Date();
  date.setTime(date.getTime()+(days*24*60*60*1000));
  var expires="; expires="+date.toGMTString();
  }
else var expires="";
document.cookie=name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
var nameis=name+"=";
var allcooks=document.cookie.split(';');
for(var i=0;i < allcooks.length;i++)
  {
  var cook=allcooks[i];
  while (cook.charAt(0)==' ') cook = cook.substring(1,cook.length);
  if (cook.indexOf(nameis) == 0) return   cook.substring(nameis.length,cook.length);
  }
return null;
}

function tossCookie(name)
{
  setCookie(name,"",-1);
}

function togglelight(onoff)
{
for(var i=0;i < document.styleSheets.length;i++)
  {
  var sheet=document.styleSheets[i];
  if (sheet.getAttribute("title") == "inverse") sheet.disabled = !onoff;
  }
}

function flipstylesheet(towhitetext)
{
if (towhitetext)
  {
  change(0);
  tossCookie("auvWhite");
  }
else
  {
  change(1);
  setCookie("auvWhite",1,180);
  }
}

function startupcheck()
{
if (readCookie("auvWhite")) togglelight(1);
}