function TabSet(tab)
	{
	
	//put total muber of menu items here
	vTotalItems = 13;
	
	//set all div's back to invisible
	for (var i=1; i <= vTotalItems; i++)
	{
	document.getElementById(i).style.visibility="hidden";
	document.getElementById(i).style.position="absolute";
	}
	
	//set current div to visible	
	document.getElementById(tab).style.visibility="visible";
	document.getElementById(tab).style.position="relative";
	writeCookie("OpenTab", tab, 24);
	}
	
	function writeCookie(name, value, hours)
{
  var expire = "";
  if(hours != null)
  {
    expire = new Date((new Date()).getTime() + hours * 3600000);
    expire = "; expires=" + expire.toGMTString();
  }
  document.cookie = name + "=" + escape(value) + expire;
}