var EFICACIA = {

	start : function()
	 {
		var inputs = document.getElementById('search_form_field').getElementsByTagName('input');
		var codigo = document.getElementById('codigo');
		
		for(var inps=0; inps<inputs.length; ++inps)
			if(inputs[inps].id != 'codigo' && inputs[inps].id != 'submit')
				inputs[inps].onfocus = function() { codigo.value = ''; }
		
		codigo.onfocus = function()
		 {
		 	for(var inp=0; inp<inputs.length; ++inp)
				if(inputs[inp].id != 'codigo')
					inputs[inp].value = '';
			return false;
		 }
	 }

}


/* LOAD */

function addLoadEvent(fn)
 {
	var old = window.onload;
	if(typeof window.onload != 'function')
		window.onload = fn;
	else
		window.onload = function()
		 {
			old();
			fn();
		 }
 }

addLoadEvent( function() { EFICACIA.start(); } );