var optionFileUpload = {
        productForm : $('product_addtocart_form'),
        formAction : '',
        formElements : {},
        upload : function(element){
            this.formElements = this.productForm.getElementsBySelector('input', 'select', 'textarea', 'button');
            this.removeRequire(element.readAttribute('id').sub('option_', ''));

            template = '<iframe id="upload_target" name="upload_target" style="width:0; height:0; border:0;"><\/iframe>';

            Element.insert($('option_'+element.readAttribute('id').sub('option_', '')+'_uploaded_file'), {after: template});

            this.formAction = this.productForm.action;
            this.productForm.action = param_url+element.readAttribute('id').sub('option_', '');
            this.productForm.target = 'upload_target';
            this.productForm.submit();
            this.productForm.target = '';
            this.productForm.action = this.formAction;
        },
        removeRequire : function(skipElementId){
            for(var i=0; i<this.formElements.length; i++){
                if (this.formElements[i].readAttribute('id') != 'option_'+skipElementId+'_file' && this.formElements[i].type != 'button') {
                    this.formElements[i].disabled='disabled';
                }
            }
        },
        addRequire : function(skipElementId){
            for(var i=0; i<this.formElements.length; i++){
                if (this.formElements[i].readAttribute('name') != 'options_'+skipElementId+'_file' && this.formElements[i].type != 'button') {
                    this.formElements[i].disabled='';
                }
            }
        },
        uploadCallback : function(data){
            this.addRequire(data.optionId);
            $('upload_target').remove();

            if (data.error) {

            } else {
                $('option_'+data.optionId+'_uploaded_file').value = data.fileName;
                $('option_'+data.optionId+'_file').value = '';
                $('option_'+data.optionId+'_file').hide();
                $('option_'+data.optionId+'').hide();
                template = '<div id="option_'+data.optionId+'_file_box"><a href="#"><img src="var/options/'+data.fileName+'"><\/a><a href="#" onclick="optionFileUpload.removeFile('+data.optionId+')">Remove file<\/a>';

                Element.insert($('option_'+data.optionId+'_uploaded_file'), {after: template});
            }
        },
        removeFile : function(optionId)
        {
            $('option_'+optionId+'_uploaded_file').value= '';
            $('option_'+optionId+'_file').show();
            $('option_'+optionId+'').show();

            $('option_'+optionId+'_file_box').remove();
        }
    }
    var optionTextCounter = {
        count : function(field,cntfield,maxlimit){
            if (field.value.length > maxlimit){
                field.value = field.value.substring(0, maxlimit);
            } else {
                cntfield.innerHTML = maxlimit - field.value.length;
            }
        }
    }

    Product.Options = Class.create();
    Product.Options.prototype = {
        initialize : function(config){
            this.config = config;
            this.reloadPrice();
        },
        reloadPrice : function(){
       
            price = new Number();
            config = this.config;
            $$('.product-custom-option').each(function(element){
                var optionId = 0;
                element.name.sub(/[0-9]+/, function(match){
                    optionId = match[0];
                });
                if (this.config[optionId]) {
                    if (element.type == 'checkbox' || element.type == 'radio') {
                        if (element.checked) {
                            if (config[optionId][element.getValue()]) {
                                price += parseFloat(config[optionId][element.getValue()]);
                            }
                        }
                    } else if(element.type == 'select-one' || element.type == 'select-multiple') {
                        if (element.options) {
                            $A(element.options).each(function(selectOption){
                                if (selectOption.selected) {
                                    if (this.config[optionId][selectOption.value]) {
                                        price += parseFloat(this.config[optionId][selectOption.value]);
                                    }
                                }
                            });
                        }
                    } else {
                        if (element.getValue().strip() != '') {
                            price += parseFloat(this.config[optionId]);
                        }
                    }
                }
            });
            try {
                optionsPrice.changePrice('options', price);
                optionsPrice.reload();
            } catch (e) {

            }
        }
    }
    function validateOptionsCallback(elmId, result){
        var container = $(elmId).up('ul.options-list');
        if (result == 'failed') {
            container.removeClassName('validation-passed');
            container.addClassName('validation-failed');
        } else {
            container.removeClassName('validation-failed');
            container.addClassName('validation-passed');
        }
    }
    var opConfig = new Product.Options(param_opt);