// **************************************************************
// Function:    printHeaders( $menuid )
// Description: print page headers
// Inputs:      $menuid - the id of the menu
// Outputs:     none
// **************************************************************
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;
    }
  }
}

// **************************************************************
// Function:    printHeaders( $menuid )
// Description: print page headers
// Inputs:      $menuid - the id of the menu
// Outputs:     none
// **************************************************************
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:    printHeaders( $menuid )
// Description: print page headers
// Inputs:      $menuid - the id of the menu
// Outputs:     none
// **************************************************************
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:    printHeaders( $menuid )
// Description: print page headers
// Inputs:      $menuid - the id of the menu
// Outputs:     none
// **************************************************************
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:    printHeaders( $menuid )
// Description: print page headers
// Inputs:      $menuid - the id of the menu
// Outputs:     none
// **************************************************************
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;
}

// **************************************************************
// Function:    printHeaders( $menuid )
// Description: print page headers
// Inputs:      $menuid - the id of the menu
// Outputs:     none
// **************************************************************
window.onload = function(e)
{
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

// **************************************************************
// Function:    printHeaders( $menuid )
// Description: print page headers
// Inputs:      $menuid - the id of the menu
// Outputs:     none
// **************************************************************
window.onunload = function(e)
{
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

// **************************************************************
// Set the default style sheet
// **************************************************************
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);