function getObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} // getObject

function esconde(objectId) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getObject(objectId);
    if(styleObject) {
    	if (styleObject.display == 'block') {
    		styleObject.display = 'none';
    	} else {
    		styleObject.display = 'block';
    	}
		return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
		return false;
    }
} // esconde

function inicia(objectId, estado) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getObject(objectId);
    if(styleObject) {
   		styleObject.display = estado;
		return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
		return false;
    }
} // inicia

var est_servicos = 'none';
var est_legislacao = 'none';