//Gravatar
function gravatar(email) {    
    var target = false;
    if(gravatar.arguments.length > 1) target = gravatar.arguments[1];
    if(email.match(/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i)){
        var mail = email;
    }else{
        var mail = "";
    }
    
    jQuery.get('ajax/gravatar.php?s=50&q='+mail,function(data){
        if(target){
            if(jQuery(target)){
                //preloadHtml(data);
                //window.setTimeout("updateElementWithEscapedData('"+target+"','"+escape(data)+"');",1000);
                jQuery(target).html(data);
            }
        }
        return data;    
    });
}