// JavaScript Document

function switchlayer(Layer_Name)
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;

  if (GECKO)
       {
       var tmp = (document.getElementById(Layer_Name).style.display=='block') ? 0 : 1;
       document.getElementById(Layer_Name).style.display=(document.getElementById(Layer_Name).style.display=='block') ? 'none' : 'block';
	   }
  else if (NS)
       {
       var tmp = (document.layers[Layer_Name].display=='block') ? 0 : 1;
       document.layers[Layer_Name].display=(document.layers[Layer_Name].display=='block') ? 'none' : 'block';
       }
  else if (IE)
       {
       var tmp = (document.all[Layer_Name].style.display=='block') ? 0 : 1;
       document.all[Layer_Name].style.display=(document.all[Layer_Name].style.display=='block') ? 'none' : 'block';
	   }
  var a = new Date();
  a = new Date(a.getTime() +60*60*1000);
  if (tmp)
  {
  document.cookie = 'layer='+Layer_Name+'; expires='+a.toGMTString()+';'; 
  }
  else
  {
  document.cookie = 'layer='+Layer_Name+'; expires=Thu, 01-Jan-70 00:00:01 GMT;'; 
  }
}

function load()
{
a = document.cookie;
name = a.substr(0,a.search('='));
layer = a.substr(a.search('=')+1);
if (name == 'layer' && layer != '') switchlayer(layer);
}