[submit.js]
<script type="text/javascript">
jQuery(document).ready(function($){
	$("input[type='submit']").click(function(){
		$(this).attr("disabled","disabled");
	});
});
</script>
[]
[javasvript.js]
function nextField(field,nextfield){ 
    if ( field.value.length == 1 ){ 
        document.getElementById(nextfield).focus(); 
    } 
} 
[]
PD: now i can see other message error of console:
Error: missing } in XML expression
[source file]Archivo de origen: 
https://x.x.x.x/db/PD/submit.js[line 5, crow 3]Línea: 5, columna: 3
[Código fuente][source code]:
 });