function mostrar(request,capa){
	document.getElementById(capa).innerHTML = request.responseText;
}
function cargar(url, capa){    
	new ajax (url, {postBody: 'sleep=3', update: $(capa)});
}

function myEvisos(capa){
	var url = document.location.host;
	new ajax ('http://'+url+'/js/myevisos.php', {postBody: 'sleep=3', update: $(capa)});
}

function showForm(request){
	document.getElementById('ctd_form').innerHTML=request.responseText;
}
function loadForm(url){    
    //document.getElementById('ctd_imagen').innerHTML=cargandoStr;
	new ajax (url, {postBody: 'sleep=3', update: $(''), onComplete: showForm});
}

function limpiar_cbo(capa, nombre_cbo ){
	
	combo_vacio = '<select name="'+nombre_cbo+'" style="width:200px" class="buscar_lista"><option value="" selected="selected" >---------  seleccionar  ---------</option></select>';
	document.getElementById(capa).innerHTML = combo_vacio; 
}