public static function admin_screen()
    {
        ?>
	<style>
		.chzn-container{margin-right:2px;}
		.field_title{width:205px; padding:0 8px 0 10px; float:left;}
		.help_tip{cursor: help;line-height: 1;margin: -4px 0 0 5px;padding: 0;vertical-align: middle;}
		.compare_set_1{width:46%; float:left; margin-right:5%; margin-bottom:15px;}
		.compare_set_2{width:46%; float:left; margin-bottom:15px;}
		.ui-state-highlight{background:#F6F6F6; height:24px; padding:8px 0 0; border:1px dotted #DDD; margin-bottom:20px;}
		ul.compare_orders{float:left; margin:0; width:100%}
		ul.compare_orders li{padding-top:8px; border-top:1px solid #DFDFDF; margin:5px 0; line-height:20px;}
		ul.compare_orders li.first_record{border-top:none; padding-top:0;}
		ul.compare_orders .compare_sort{float:left; width:60px;}
		.c_field_name{padding-left:20px; background:url(<?php 
        echo WOOCP_IMAGES_URL;
        ?>
/icon_sort.png) no-repeat 0 center;}
		.c_openclose_table{cursor:pointer;}
		.c_openclose_none{width:16px; height:16px; display:inline-block;}
		.c_close_table{background:url(<?php 
        echo get_option('siteurl');
        ?>
/wp-admin/images/arrows.png) no-repeat center 0px; width:16px; height:16px; display:inline-block;}
		.c_open_table{background:url(<?php 
        echo get_option('siteurl');
        ?>
/wp-admin/images/arrows.png) no-repeat center -35px; width:16px; height:16px; display:inline-block;}
		ul.compare_orders .c_field_type{width:120px; float:left;}
		ul.compare_orders .c_field_manager{background:url(<?php 
        echo WOOCP_IMAGES_URL;
        ?>
/icon_fields.png) no-repeat 0 0; width:16px; height:16px; display:inline-block;}
		.tablenav-pages{float:right;}
		.c_field_edit, .c_field_delete{cursor:pointer;}
		.widefat th input {
			vertical-align:middle;
			padding:3px 8px;
			margin:auto;
		}
		.widefat th, .widefat td {
			overflow: inherit !important;	
		}
		.chzn-container-multi .chzn-choices {
			min-height:100px;	
		}

		ul.feature_compare_orders .compare_sort{margin-right:10px; float:none; width:auto;}
		ul.feature_compare_orders .c_field_name{margin-right:10px;padding:5px 0 5px 20px; float:none; width:auto;}
		ul.feature_compare_orders .c_field_action{float:right;}
		ul.feature_compare_orders .c_field_type{float:right; margin-right:10px; width:70px;}
		
		.icon32-compare-product {
			background:url(<?php 
        echo WOOCP_IMAGES_URL;
        ?>
/a3-plugins.png) no-repeat left top !important;
		}
		@media screen and ( max-width: 782px ) {
			.a3rev_manager_panel_container table {
				width:100% !important;	
			}
			.a3rev_manager_panel_container td.search_features_td {
				text-align:left !important;	
			}
		}
	</style>
	<script>
		(function($){
			$(function(){
				$("#field_type").change( function() {
					var field_type = $(this).val();
					if(field_type == 'checkbox' || field_type == 'radio' || field_type == 'drop-down' || field_type == 'multi-select'){
						$("#field_value").slideDown();
					}else{
						$("#field_value").slideUp();
					}
				});
				$('#toggle1').click(function(){
					if($('#toggle1').is(':checked')){
						$(".list_fields").attr("checked", "checked");
						$(".toggle2").attr("checked", "checked");
					}else{
						$(".list_fields").removeAttr("checked");
						$(".toggle2").removeAttr("checked");
					}
				});
				$('#toggle2').click(function(){
					if($('#toggle2').is(':checked')){
						$(".list_fields").attr("checked", "checked");
						$(".toggle1").attr("checked", "checked");
					}else{
						$(".list_fields").removeAttr("checked");
						$(".toggle1").removeAttr("checked");
					}
				});
			});
		})(jQuery);
		function confirmation(text) {
			var answer = confirm(text)
			if (answer){
				return true;
			}else{
				return false;
			}
		}		
	</script>
        <div id="htmlForm">
        <div style="clear:both"></div>
		<div class="wrap a3rev_panel_container a3rev_manager_panel_container">
        <div id="a3_plugin_panel_container"><div id="a3_plugin_panel_fields">
        <?php 
        echo WC_Compare_Fields_Class::init_features_actions();
        echo WC_Compare_Categories_Class::init_categories_actions();
        ?>
		<?php 
        if (isset($_REQUEST['act']) && $_REQUEST['act'] == 'add-new') {
            WC_Compare_Categories_Class::woocp_categories_manager();
            WC_Compare_Fields_Class::woocp_features_manager();
        } else {
            if (isset($_REQUEST['act']) && $_REQUEST['act'] == 'cat-edit') {
                WC_Compare_Categories_Class::woocp_categories_manager();
            } else {
                if (isset($_REQUEST['act']) && $_REQUEST['act'] == 'field-edit') {
                    WC_Compare_Fields_Class::woocp_features_manager();
                } else {
                    if (isset($_REQUEST['s_feature'])) {
                        WC_Compare_Fields_Class::features_search_area();
                    } else {
                        WC_Compare_Fields_Class::features_search_area();
                        WC_Compare_Fields_Class::woocp_features_orders();
                    }
                }
            }
        }
        ?>
        </div><div id="a3_plugin_panel_upgrade_area"><div id="a3_plugin_panel_extensions"><?php 
        echo WC_Compare_Functions::plugin_pro_notice();
        ?>
</div></div></div>
        </div>
        </div>
		<?php 
    }
    public static function woocp_products_manager()
    {
        $compare_product_message = '';
        $paged = isset($_POST['paged']) ? $_POST['paged'] : 1;
        $rp = isset($_POST['rp']) ? $_POST['rp'] : 10;
        $cp_show_variations = isset($_POST['cp_show_variations']) ? $_POST['cp_show_variations'] : 0;
        $sortname = isset($_POST['sortname']) ? $_POST['sortname'] : 'title';
        $sortorder = isset($_POST['sortorder']) ? $_POST['sortorder'] : 'asc';
        $query = isset($_POST['query']) ? $_POST['query'] : '';
        $qtype = isset($_POST['qtype']) ? $_POST['qtype'] : '';
        if (isset($_REQUEST['bt_update_product_features'])) {
            if (isset($_REQUEST['productid']) && $_REQUEST['productid'] > 0) {
                $post_id = $_REQUEST['productid'];
                $post_status = get_post_status($post_id);
                $post_type = get_post_type($post_id);
                if (($post_type == 'product' || $post_type == 'product_variation') && $post_status != false) {
                    if (isset($_REQUEST['_woo_deactivate_compare_feature']) && $_REQUEST['_woo_deactivate_compare_feature'] == 'no') {
                        update_post_meta($post_id, '_woo_deactivate_compare_feature', 'no');
                    } else {
                        update_post_meta($post_id, '_woo_deactivate_compare_feature', 'yes');
                    }
                    $compare_category = $_REQUEST['_woo_compare_category'];
                    update_post_meta($post_id, '_woo_compare_category', $compare_category);
                    if ($compare_category > 0) {
                        $category_data = WC_Compare_Categories_Data::get_row($compare_category);
                        if ($category_data != NULL) {
                            update_post_meta($post_id, '_woo_compare_category_name', stripslashes($category_data->category_name));
                        }
                        $compare_fields = WC_Compare_Categories_Fields_Data::get_results("cat_id='" . $compare_category . "'", 'cf.field_order ASC');
                        if (is_array($compare_fields) && count($compare_fields) > 0) {
                            foreach ($compare_fields as $field_data) {
                                if (isset($_REQUEST['_woo_compare_' . $field_data->field_key])) {
                                    update_post_meta($post_id, '_woo_compare_' . $field_data->field_key, $_REQUEST['_woo_compare_' . $field_data->field_key]);
                                }
                            }
                        }
                    } else {
                        update_post_meta($post_id, '_woo_compare_category_name', '');
                    }
                }
                $compare_product_message = '<div class="updated" id="result_msg"><p>' . __('Compare Product Feature Fields Successfully updated.', 'woo_cp') . '.</p></div>';
            }
        }
        ?>
<style>
	.update_message{padding:10px; background-color:#FFFFCC;border:1px solid #DDDDDD;margin-bottom:15px;}
	body .flexigrid div.sDiv{display:block;}
	.flexigrid div.sDiv .sDiv2 select{display:none;}
	.flexigrid div.sDiv .cp_search, .flexigrid div.sDiv .cp_reset{cursor:pointer;}
	.edit_product_compare{cursor:pointer; text-decoration:underline; color:#06F;}
	.icon32-compare-product {
		background:url(<?php 
        echo WOOCP_IMAGES_URL;
        ?>
/a3-plugins.png) no-repeat left top !important;
	}
	.pro_feature_fields {
		padding:0 10px 10px 10px;	
	}
</style>
<div id="htmlForm">
<div style="clear:both"></div>
<div class="wrap a3rev_panel_container a3rev_manager_panel_container">
	<div id="a3_plugin_panel_container"><div id="a3_plugin_panel_fields">
	<div class="icon32 icon32-compare-product" id="icon32-compare-product"><br></div>
	<h2><?php 
        _e('WooCommerce Compare Products Manager', 'woo_cp');
        ?>
</h2>
    <?php 
        echo $compare_product_message;
        ?>
    <div style="clear:both; margin-bottom:20px;"></div>
    <div class="pro_feature_fields">
    <?php 
        global $wc_compare_admin_init;
        $wc_compare_admin_init->upgrade_top_message(true);
        ?>
    <table id="woocp_products_manager" style="display:none"></table>
    </div>
    <?php 
        $woocp_products_manager = wp_create_nonce("woocp-products-manager");
        ?>
    <script type="text/javascript">
		function alert_upgrade(text) {
			var answer = confirm(text)
			if (answer){
				window.open("<?php 
        echo WOOCP_AUTHOR_URI;
        ?>
", '_blank')
			}else{
				return false;
			}
		}
	(function($){
		$(function(){
			$("#woocp_products_manager").flexigrid({
				url: '<?php 
        echo admin_url('admin-ajax.php', 'relative') . '?action=woocp_get_products&security=' . $woocp_products_manager;
        ?>
',
				dataType: 'json',
				width: 'auto',
				resizable: false,
				colModel : [
					{display: '<?php 
        _e("No", 'woo_cp');
        ?>
', name : 'number', width : 20, sortable : false, align: 'right'},
					{display: '<?php 
        _e("Product Name", 'woo_cp');
        ?>
', name : 'title', width : 200, sortable : true, align: 'left'},
					{display: '<?php 
        _e("Product Category", 'woo_cp');
        ?>
', name : 'cat', width : 110, sortable : false, align: 'left'},
					{display: '<?php 
        _e("Compare Category", 'woo_cp');
        ?>
', name : '_woo_compare_category_name', width : 110, sortable : true, align: 'left'},
					{display: '<?php 
        _e("Activated / Deactivated", 'woo_cp');
        ?>
', name : '_woo_deactivate_compare_feature', width : 110, sortable : false, align: 'center'},
					{display: '<?php 
        _e("Edit", 'woo_cp');
        ?>
', name : 'edit', width : 30, sortable : false, align: 'center'}
					],
				searchitems : [
					{display: '<?php 
        _e("Product Name", 'woo_cp');
        ?>
', name : 'title', isdefault: true}
					],
				sortname: "title",
				sortorder: "asc",
				usepager: true,
				title: '<?php 
        _e("Products", 'woo_cp');
        ?>
',
				findtext: '<?php 
        _e("Find Product Name", 'woo_cp');
        ?>
',
				useRp: true,
				rp: <?php 
        echo $rp;
        ?>
, //results per page
				newp: <?php 
        echo $paged;
        ?>
,
				page: <?php 
        echo $paged;
        ?>
,
				query: '<?php 
        echo $query;
        ?>
',
				qtype: '<?php 
        echo $qtype;
        ?>
',
				sortname: '<?php 
        echo $sortname;
        ?>
',
				sortorder: '<?php 
        echo $sortorder;
        ?>
',
				rpOptions: [10, 15, 20, 30, 50, 100], //allowed per-page values
				showToggleBtn: false, //show or hide column toggle popup
				showTableToggleBtn: false,
				height: 'auto',
				variations: '<?php 
        echo $cp_show_variations;
        ?>
'
			});
			$(document).on("click", ".edit_product_compare", function(ev){
				return alert_upgrade('<?php 
        _e('Please upgrade to the Pro Version to activate Products express Compare feature manager', 'woo_cp');
        ?>
');
			});
		});
	})(jQuery);
	</script>
</div><div id="a3_plugin_panel_upgrade_area"><div id="a3_plugin_panel_extensions"><?php 
        echo WC_Compare_Functions::plugin_pro_notice();
        ?>
</div></div></div>
</div>
</div>
<?php 
    }