function focusator (el){
	el.style.background = "#E6E6E6";
}

function blurator (el){
	el.style.background = "transparent";
}

function comprueba(f){
    var regex = /^\s*$/i;
      for(var i=0; i<f.elements.length; i++){
        if(regex.test(f.elements[i].value)){
		if(f.elements[i].name != "msg"){
          alert("ATENCIÓN / WARNING:\n\nPor favor, comprueba el formulario. Todos los campos son obligatorios.\n\nPlease, check the form again. All the fields are required.\n\nGracias / Thank You.");
          f.elements[i].focus();
          return false;
		  }
       }
    }
	f.submit();
	return true;
}

function pasamail(fst,lst){
   mailurl = "mailto:" + fst + "@" + lst;
   window.location = mailurl;
}