var lastp = "home";
function checkCookie()
{
	var tab = getCookie("tab");
	if (tab != "")
	{
		document.getElementById(lastp).style.display = "none";
		document.getElementById(tab).style.display = "block";
		lastp = tab;
	}
}
function tab(tab)
{
	document.getElementById(lastp).style.display = "none";
	document.getElementById(tab).style.display = "block";
	lastp = tab;
	document.cookie = "tab=" + lastp + "; path=/";
}
function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=")
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    } 
  }
return ""
}