function limpiar(){
   var result = document.getElementById("result");
   result.innerHTML = "";
}

function completa(txt){
   var form = document.forms['mn'];
   var result = document.getElementById("result");

   txt = txt.replace("~","'");
   pos = txt.indexOf("|");

   if (pos != -1){
      form.tabla.value = txt.substring(pos+1,txt.length);
      txt = txt.substring(0,pos);
   }

   form.strsrch.value = "+"+txt;
   result.innerHTML = "";
   form.submit();
}

function sugerir(ev) {
   var form = document.forms['mn'];
   var result = document.getElementById("result");
   var contenttype = 'application/x-www-form-urlencoded';
   var req;

   if (form.strsrch.value.length < 2){
      result.innerHTML = "";
      return;
   }

   if (navigator.userAgent.indexOf("IE") == -1){
     req = new XMLHttpRequest();
   }
   else {
     req = new ActiveXObject("Microsoft.XMLHTTP");
   }

   req.open('POST', 'autocomplete.php', true);
   req.setRequestHeader('Content-Type', contenttype);
   req.onreadystatechange =
     function() {
       if (req.readyState == 4)
        //alert(req.responseText);
    	result.innerHTML = req.responseText;
     }

   req.send('patron=' + escape(form.strsrch.value));
}