//FUNCIONES JAVASCRIPTS GENERALES 

function clickclear(thisfield, defaulttext) {
	if (thisfield.value == defaulttext) {
		thisfield.value = "";
	}
}

function clickrecall(thisfield, defaulttext) {
	if (thisfield.value == "") {
		thisfield.value = defaulttext;
	}
}

function limitText(limitField, limitNum) {
    if (limitField.value.length > limitNum) {
        limitField.value = limitField.value.substring(0, limitNum);
    } 
}

function toggle_visibility(id) {
   var e = document.getElementById(id);
   if (e.style.display == 'none') {
      e.style.display = '';
    } else {
      e.style.display = 'none';
    }
}