function Validator(form) {
    var messages = new Array();
    var fields = new Array();
    var labels = new Array();

    var allLabels = form.getElementsByTagName("label");
    for (var c = 0;c<allLabels.length;c++) {
        var label = allLabels[c];
        labels[label.htmlFor] = label.innerHTML;
    }

    this.validateEmail = function(field) {
        alert('Validating email: '+field);
    }

    this.verify = function() {
        if (this.isEmpty()) return true;
        alert(this.getFullErrorMessage());
        return false;
    }
    this.isEmpty = function() {
        return this.getSize() <= 0;
    }
    this.isEmptyField = function(field){
        return field.value.length <=0
    }
    this.getSize = function() {
        return messages.length + fields.length;
    }

    this.requiredField = function(field) {
        if (field.value.length <= 0) {
            this.addField(field);
        }
    }

    this.addLabel = function(name,label) {
        labels[name] = label;
    }
    this.addMessage = function(message) {
        messages[messages.length] = message;
    }

    this.addField = function(field) {
        fields[fields.length] = field;
    }

    this.clear = new function() {
        messages = new Array();
        fields = new Array();
    }

    this.getFullErrorMessage = function() {
        var error = "";
        var c;

        if ((messages.length == 1) && (this.getSize() == 1)) {
            error = messages[0];
        } else {
            if (fields.length > 0) {
                error = error+"The following fields are required:";
                for (c=0;c<fields.length;c++) {
                    var field = fields[c];
                    error = error+"\n\t*";
                    var label = labels[field.id];
                    if ((label == null) || (label.length <= 0)) label = field.name;
                    error = error+label;
                }
            }
            if (messages.length > 0) {
                if (error.length > 0) error = error+"\n";
                error = error+"The following messages were provided:";
                for (c=0;c<messages.length;c++) {
                    var msg = messages[c];
                    error = error+"\n\t";
                    error = error+msg;
                }
            }
        }
        return error;
    }
}