var labelStyleNormal = { className: "normal"};
var labelStyleMarked = { className: "red"};
var formular = {
    obj: null,
    element: null,
    init: function(id){
        this.element = new Array();
        this.obj = d_obj(id);
    },
    addElement: function(id, type, mandatory){
        var elm = new formElement(id, type, mandatory);
        if (elm) this.element[this.element.length] = elm;
    },
    validateForm: function(){
        var valid = true;
        for(var i=0; i < this.element.length; i++){
          if (this.element[i].checkElement() == false) valid = false;
        }
        //alert(valid);
        return valid;
    }
} //formular
function formElement(id, type, mandatory){
    this.id = id;
    this.type = type;
    if (this.type != "radio") this.obj = d_obj(id);
    else {
        this.obj = true;
    }
    
    this.mandatory = mandatory;
    if ((this.type == "text") || (this.type == "string") || (this.type == "textarea") || (this.type == "email") || (this.type == "select"))  this.mark_obj = this.obj;
    else this.mark_obj = d_obj("mark_" + this.id) ? d_obj("mark_" + this.id) : null;
    this.mark_class =  this.mark_obj.className;
   
    this.checkElement = function(){
        var valid = true;
        if (this.mandatory == false) return true;
        else {
            switch(this.type){
                case "string" :
                case "text" :
                    valid = this.checkTextElement();
                    break;
                case "radio":
                    valid = this.checkRadioElement();
                    break;
                case "email":
                    valid = this.checkEmailElement();
                    break;
                case "checkbox":
                    valid = this.checkCheckboxElement();
                    break;
                case "textarea":
                    valid = this.checkTextareaElement();
                    break;
                case "select":
                    valid = this.checkSelectElement();
                    break;
                 default:
                    valid = false;
                    break;
            }
            return valid;
        }
    };
    this.checkTextElement = function(){
        if (this.obj.value != "") {
            this.clearLabelElement();
            return true;
        }
        else {
            this.markLabelElement();
            return false;
        }
    };
    this.checkRadioElement = function(){
        var valid = false;
        for (var i=0; i< formular.obj.elements.length; i++){
            if ( formular.obj.elements[i].name == this.id) {
                if (formular.obj.elements[i].checked == true) {
                    this.clearLabelElement();
                    valid = true;
                }
            }
        }
        if (valid == false) this.markLabelElement();
        return valid;
    };
    this.checkEmailElement = function(){
        if (!(this.obj.value.search(/[@.]/) >= 0) || !(this.obj.value.search(/.+@..+\...+/) >= 0) || !(this.obj.value.length >= 8)) {
            this.markLabelElement();
            return false;
        } else {
            this.clearLabelElement();
            return true;
        }
        
    };
    this.checkCheckboxElement = function(){
        if (this.obj.checked != false) {
            this.clearLabelElement();
            return true;
        }
        else {
            this.markLabelElement();
            return false;
        }
    };
    this.checkTextareaElement = function(){
        if (this.obj.value != "") {
            this.clearLabelElement();
            return true;
        }
        else {
            this.markLabelElement();
            return false;
        }
    };
    this.checkSelectElement = function(){
        if (this.obj.value != "") {
            this.clearLabelElement();
            return true;
        }
        else {
            this.markLabelElement();
            return false;
        }
    };
    this.markLabelElement = function(){
        if (this.mark_obj) {
            if (this.mark_class == "") this.mark_obj.className = labelStyleMarked.className;
            else this.mark_obj.className = this.mark_class + " " + labelStyleMarked.className;
        }
    };
    this.clearLabelElement = function(){
        if (this.mark_obj) {
            if (this.mark_class == "") this.mark_obj.className = labelStyleNormal.className;
            else this.mark_obj.className = this.mark_class + " " + labelStyleNormal.className;
        }
    };
    if (this.obj) return this;
    else return false;
}
function validateForm(){
    return formular.validateForm();
}