var ajaxScrollCount = 40;
var ajaxScrollOffset = 40;
var ajaxScrollEnabled = true;

/* confirm dialog when class is delete */
$(document).ready(function () {
    // delete confirm dialog
    $('.delete').click(function () {
        var answer = confirm('Are you sure?');
        return answer;
    });

    $(".dialog").dialog({ width: 800 });

    $(".datepicker").datepicker();

    /* ajax form updater and scorll based loader
    It updates form on submit using ajax - sending offset 0 to it when user clicks

    It also updates form when user scrolls to bottom - sending current offset to it, this continues until controller returns data.

    AjaxScrollProgress element is made visible to display loading progress
    */
    var frm = $("#ajaxScrollForm");
    var prg = $("#ajaxScrollProgress");
    var target = $("#ajaxScrollTarget");

    if (frm && typeof frm.attr("id") != 'undefined') {
        window.onscroll = function () {
            if (!ajaxScrollEnabled) {
                return;
            }
            var el = document.documentElement;
            var page = $("body");
            // bugfix for ebkit based stuff 
            // chrome needs scrolLTop out of jquery by the page. Object Opera, IE, Firefox take the original dom property
            var scrollTop = (typeof jQuery.browser.mozilla != 'undefined' || typeof jQuery.browser.msie != 'undefined' || typeof jQuery.browser.opera != 'undefined') ? el.scrollTop : page.scrollTop();
            if (el.scrollHeight - (scrollTop + el.clientHeight) < 50) {
                ajaxScrollEnabled = false;
                prg.show();
                $.post(frm.attr("action"), frm.serialize() + "&offset=" + ajaxScrollOffset, function (ret) {
                    target.append(ret);
                    ajaxScrollOffset = ajaxScrollOffset + ajaxScrollCount;
                    if (ret == '') ajaxScrollEnabled = false;
                    else ajaxScrollEnabled = true;
                    prg.hide();
                });
            }
        };

        frm.submit(function () {
            ajaxScrollEnabled = false;
            ajaxScrollOffset = 0;
            prg.show();
            $.post(frm.attr("action"), frm.serialize() + "&offset=" + ajaxScrollOffset, function (ret) {
                target.html(ret);
                ajaxScrollOffset = ajaxScrollCount;
                ajaxScrollEnabled = true;
                prg.hide();
            });
            return false;
        });
    }
});


$(window).load(function () {
	// img zoomer
	$("img.zoom").each(function () {
		$.data(this, 'size', { width: $(this).width(), height: $(this).height() });
	}).hover(function () {
		$(this).stop().animate({ height: $.data(this, 'size').height * 4, width: $.data(this, 'size').width * 4 }, 300);
	}, function () {
		$(this).stop().animate({ height: $.data(this, 'size').height, width: $.data(this, 'size').width }, 600);
	});
});