var letters="#abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789,.:;?/\|@$%&*()[]{}<>+=-_¨^"
function Encode(str)    
 {
  var _str="";
  for(var cnt=0; cnt <= str.length; cnt++)       
   {
    for(var _cnt=0; _cnt <= letters.length;  _cnt++)          
     {
      if (letters.substring(_cnt,_cnt+1) == str.substring(cnt,cnt+1))
       {     
        vv=_cnt+2; 
        _str=_str+letters.substring(vv,vv+1); 
       }  
     }
   }     
    return (_str);     
 }       

function Decode(str)     
 {
  var _str="";
  for(var cnt=0; cnt <=str.length; cnt++)       
   {
    for(var _cnt=letters.length; _cnt >=0;  _cnt--)         
     {
      if (letters.substring(_cnt,_cnt-1) == str.substring(cnt,cnt+1))
       {
        vv=_cnt-2;
        _str=_str+letters.substring(vv,vv-1);
       }
     }  
   }   
    return (_str);      
 }
function askencode()
 {
  var etext = prompt("Introduce tu Url","http://");
  while (etext == "" || etext == "null")          
   {
    etext = prompt("Introduce tu Url","http://");
   }
   var emsg = Encode(etext);
   var fmsg = "direccion.php?url="+emsg+"\n\n";
   window.open(''+fmsg+'','ventana','menubar=1,resizable=1,width=950,height=700,Scrollbars=yes,top=0,left=0,location=no,menubar=no,status=no,toolbar=no,titlebar=no');
}

function askdecode(url)
 {
  var dtext = url;
  while (dtext == "" || dtext == "null")          
   {
    dtext = url;
   }
   var dmsg = Decode(dtext);
   
   window.open(''+dmsg+'','ventana2','menubar=1,resizable=1,width=950,height=700,Scrollbars=yes,top=0,left=0,location=no,menubar=no,status=no,toolbar=no,titlebar=no');
 }

function highlight(field)
{
 field.focus();
 field.select();
}

function sindecode(url)
 {
  window.open(''+url+'','ventana2','menubar=1,resizable=1,width=950,height=700,Scrollbars=yes,top=0,left=0,location=no,menubar=no,status=no,toolbar=no,titlebar=no');
 }

function forumencode(str)
 {
   var emsg = Encode(str);
   var fmsg = '<a href="http://p4p.com.es/protect.php?url='+emsg+'" target="_blank">';
   document.write(''+fmsg+'');
}