function clearDefault(el) {
    if (el.defaultValue==el.value) el.value = ""
}

function CreateBookmark(url, title) {

    if (window.sidebar) { // Mozilla Firefox Bookmark
        window.sidebar.addPanel(title, url,"");
    } else if( window.external ) { // IE Favorite
        window.external.AddFavorite( url, title);
    } else if(window.opera && window.print) { // Opera Hotlist
        return true;
    }
}

function validate_email(field,alerttxt) {
    with (field) {
        apos=value.indexOf("@")
        dotpos=value.lastIndexOf(".")
        if (apos<1||dotpos-apos<2) {
            alert(alerttxt); return false
        }
        else {return true}
    }
}