function swi(a, image){ a.src=image; }

function strrev(str) {
   if (!str) return '';
   var revstr='';
   for (i = str.length-1; i>=0; i--)
       revstr+=str.charAt(i)
   return revstr;
} 

function setCookie(szName, szValue)
{
var today = new Date();
var y = new Date(2015, today.getMonth(), today.getDate());
var szCookieText = escape(szName) + '=' + escape(szValue);
szCookieText += "; path=/";
szCookieText +=    (y ? '; EXPIRES=' + y.toGMTString() : '');
document.cookie = szCookieText;
}

function getCookie(szName)
{
 var szValue =  null;
if(document.cookie)   
{
       var arr =   document.cookie.split((escape(szName) + '=')); 
       if(2 <= arr.length)
       {
           var arr2 =    arr[1].split(';');
       szValue  =    unescape(arr2[0]);
       }
}
return szValue;
}

function update_username() 
{ 
  var n=getCookie('name');
  if (n!=null) document.commentform.name.value = n;
}