var isNS4 = (navigator.appName=="Netscape")?1:0;

function abreSitio(){
var URL = "http://";
var web = document.form1.sitio.options[document.form1.sitio.selectedIndex].value;
window.open(URL+web, '_self', '');
}



function aaa(campo, event) {

CadenaaReemplazar = " ";
CadenaReemplazo = "-";
CadenaTexto = campo.value;
CadenaTextoNueva = CadenaTexto.split(CadenaaReemplazar).join(CadenaReemplazo);
campo.value = CadenaTextoNueva;

}




   function validacion2(formulario) {  
     
       var er_ewall = /(^([a-z]|[A-Z]|-)+|^)$/  
             
      //comprueba campo del blog
       if(!er_ewall.test(formulario.ewall.value)) {   
           alert('Blog name: invalid character.')  
           return false  
       } }