simple string formatter

var fmt = function () {
    var append = function(text,append){
        if($.isArray(text))
            for(var i = 0; i < text.length; i++)
                text[i] = text[i] + append;
        else
            text = text + append;
        
        return text;
    },
    split = function (text, separator) {
        if (!separator) separator=".";    
        
        text = text.split(separator);
        
        for(var i = 0; i < text.length-1; i++)
            text[i] = text[i]+ separator;
        
        return text;
    },
    warning = function (text,class) {
        if(!class) class="red"
        return '<span class="' + class + '">' + text + '</span>';
    },
    join = function (tokens){
        return tokens.join("");
    };
 
    return {
        append: append,
        split: split,
        warning: warning,
        join: join
    };
}();