var fontSizeUnit = "px";
var perOrder = 1;
var defaultSize = 13;
var ckName = "cancerCenter";
var ckDays = 2;
var ckPath = "/"

var cancerCenter = GetCookie( ckName );

if ( cancerCenter == null ){
  var currentSize = defaultSize;
} else {
  var currentSize = eval( cancerCenter );
}

document.writeln( '<style type="text/css">' );
document.write( 'body{font-size:' + currentSize + fontSizeUnit+ '}' );
document.writeln( '</style>' );

function fsize( CMD ){

  if ( CMD == "larger" ){
    var newSize = Number( currentSize + perOrder );
    SetCookie( ckName , newSize );
  }

  if ( CMD == "smaller" ){
    if ( currentSize != perOrder ){
      var newSize = Number( currentSize - perOrder );
      SetCookie( ckName , newSize );
    } else {
      var newSize = Number( currentSize );
    }
  }

  if ( CMD == "default" ){
    DeleteCookie( ckName );
  }

  location.reload();
}

function SetCookie( name , value ){
  var dobj = new Date();
  dobj.setTime(dobj.getTime() + 24 * 60 * 60 * ckDays * 1000);
  var expiryDate = dobj.toGMTString();
  document.cookie = name + '=' + escape(value) + ';expires=' + expiryDate + ';path=' + ckPath;
}

function GetCookie (name){
  var arg  = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen){
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
    return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}

function getCookieVal (offset){
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
  endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset,endstr));
}

function DeleteCookie(name){
  if (GetCookie(name)){
    document.cookie = name + '=' +
    '; expires=Thu, 01-Jan-70 00:00:01 GMT;path='+ckPath;
  }
}

// EOF