function check_len(form) {
   var temp;
   var bytes;
   bytes = 0;
   len = form.value.length;
   str = form.value;

 // µÞ °ø¹éÀ» »èÁ¦ÇÔ
   for(k=(len-1); k>=0; k--){
    cur_str = str.substring(k, k+1);
    if (cur_str==" "){
       str = str.substring(0, k);
    }
    else {
      k=0;
    }
   }

   form.value = str;
   len = form.value.length;

   
   for(k=0;k<len;k++)
   {
      temp = form.value.charAt(k);

      if(escape(temp).length > 4)
          bytes += 2;
      else  bytes++;
   }
   return bytes;
}