function testUserID()
{
cvalue = GetCookie('UserID');
if (cvalue != null)
 {
  DeleteCookie('target_url')
 }
 else
 {
  SetCookie('target_url',document.URL,1);
  GoTo('http://aif.com/login.shtm');
 }
}

function GoTo(sURL)
{
 top.location.href = sURL
}		

function getCookieVal (offset)
{  
 var endstr = document.cookie.indexOf (";", offset);  
 if (endstr == -1)    
 endstr = document.cookie.length;  
 return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name)
{  
 var arg = name + "=";  
 var alen = arg.length;  
 var clen = document.cookie.length;  
 var i = 0;  
 while (i < clen) 
 {    
  var j = i + alen;    
  if (document.cookie.substring(i, j) == arg)      
  return getCookieVal (j);    
  i = document.cookie.indexOf(" ", i) + 1;    
  if (i == 0) break;   
 }  
 return null;
}

function SetCookie(cookieName,cookieValue,nDays)
{
 var today = new Date();
 var expire = new Date();
 if (nDays==null || nDays==0) nDays=1;
 expire.setTime(today.getTime() + 3600000*24*nDays);
 document.cookie = cookieName+"="+escape(cookieValue)
                 + ";expires="+expire.toGMTString();
}

function DeleteCookie (name)
{  
 var exp = new Date();  
 exp.setTime (exp.getTime() - 1);  
 var cval = GetCookie (name);  
 document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}