var populateSubscribeWidget = function(){
    ids = new Array("id_email", "id_name");
    vals = new Array("your email here", "first & last name");
    for(i=0; i<ids.length; i++){
        el = document.getElementById(ids[i]);
        el.value = vals[i];
        el.onfocus = new Function("if(this.value==\""+vals[i]+"\") this.value=\"\";");
        el.onblur = new Function("if(this.value==\"\") this.value=\""+vals[i]+"\";");
    }
}
YAHOO.util.Event.on(window, "load", populateSubscribeWidget)