var cPageMenuCookieID = "TT_PageMenu";

/*
  name - name of the desired cookie
  return string containing value of specified cookie or null
  if cookie does not exist
*/
function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}

/*
   name - name of the cookie
   value - value of the cookie
   [expires] - expiration date of the cookie
     (defaults to end of current session)
   [path] - path for which the cookie is valid
     (defaults to path of calling document)
   [domain] - domain for which the cookie is valid
     (defaults to domain of calling document)
   [secure] - Boolean value indicating if the cookie transmission requires
     a secure transmission
   * an argument defaults when it is assigned null as a placeholder
   * a null placeholder is not required for trailing omitted arguments
*/
function setCookie(name, value, expires, path, domain, secure) {
	//alert( "set up cookie 00: " + document.cookie +" page: " + value );
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
	//alert( "set up cookie xx: " + document.cookie +" page: " + curCookie );
  document.cookie = curCookie;
	//alert( "set up cookie yy: " + document.cookie +" page: " + curCookie );
}

function loadPageFrame( currentPage )
{
//alert( "set up page: " + currentPage + " element " + document.getElementById( "contentframe" ) );
	document.getElementById( "contentframe" ).src = currentPage;
}

/* Sets the cookie for the menu section to be enabled on the page given in address.
 * To be called in <a href=...
 */
function changePage( newPage, address )
{
	if( newPage != null && newPage != "" )
		setCookie( cPageMenuCookieID, address, false, '/', false, false );
	else
		setCookie( cPageMenuCookieID, fDefaultPage, false, '/', false, false );
//	alert( "set up cookie 1: " + document.cookie +" page: " + newPage +"\n" + address );
	if( address != null && address != "" )
		location.href = newPage;
	else
		location.reload();
//	alert( "set up cookie 2: " + document.cookie +" page: " + address );

}

/* Switches all unneccessary menus off, debpending on cookie.
 */
function loadContentPage()
{
//alert( "get cookie 2: " + document.cookie +" page: " + fCurrentPage );
	var fCurrentPage = getCookie( cPageMenuCookieID );
	if( fCurrentPage == "" )
		fCurrentPage = fDefaultPage;
//alert( "get cookie 2: " + document.cookie +" page: " + fCurrentPage );
	loadPageFrame( fCurrentPage );
}

/*
*/
function resizeBackgroundLayer()
{
alert("Test");
	var vwidth = window.innerWidth;
	var vheight = window.innerHeight;
	alert( "BG 1 w:"+ window.innerWidth + " h:" + vheight);
	var cframe = document.getElementById("contentcell");
	alert( "BG 2 w:" + document.getElementById("contentcell").width + " h:" + cframe.height );
}