(function($) {
    $.fn.pager = function(options) {
        var opts = $.extend({}, $.fn.pager.defaults, options);
        return this.each(function() {
            $(this).empty().append(renderpager(parseInt(options.pagenumber), 
        	parseInt(options.pagecount), options.buttonClickCallback));
            $('.pages li').mouseover(function() { 
        	document.body.style.cursor = "pointer"; }).mouseout(function()
        	 { document.body.style.cursor = "auto"; });
        });
    };
    function renderpager(pagenumber, pagecount, buttonClickCallback) {
        var $pager = $('<ul class="pages"></ul>');
        $pager.append(renderButton('&#60;&#60;&#60;', pagenumber, 
    	    pagecount, buttonClickCallback)).append(
    		renderButton('&#60;', pagenumber, pagecount, 
    		buttonClickCallback));
        var startPoint = 1;
        var endPoint = 9;
        if (pagenumber > 4) {
            startPoint = pagenumber - 4;
            endPoint = pagenumber + 4;
        }
        if (endPoint > pagecount) {
            startPoint = pagecount - 8;
            endPoint = pagecount;
        }
        if (startPoint < 1) {
            startPoint = 1;
        }
        for (var page = startPoint; page <= endPoint; page++) {
            var currentButton = $('<li class="page-number">' + (page) + '</li>');
            page == pagenumber ? currentButton.addClass('pgCurrent') : 
        	currentButton.click(function() { 
        	    buttonClickCallback(this.firstChild.data); });
            currentButton.appendTo($pager);
        }
        $pager.append(renderButton('&#62;', pagenumber, pagecount, 
    	    buttonClickCallback)).append(renderButton('&#62;&#62;&#62;', 
    	    pagenumber, pagecount, buttonClickCallback));
        return $pager;
    }
    function renderButton(buttonLabel, pagenumber, pagecount, 
    buttonClickCallback) {
        var $Button = $('<li class="pgNext">' + buttonLabel + '</li>');
        var destPage = 1;
        switch (buttonLabel) {
            case "&#60;&#60;&#60;":
                destPage = 1;
                break;
            case "&#60;":
                destPage = pagenumber - 1;
                break;
            case "&#62;":
                destPage = pagenumber + 1;
                break;
            case "&#62;&#62;&#62;":
                destPage = pagecount;
                break;
        }
        if (buttonLabel == "&#60;&#60;&#60;" || buttonLabel == "&#60;") {
            pagenumber <= 1 ? $Button.addClass('pgEmpty') : 
            $Button.click(function() { buttonClickCallback(destPage); });
        }
        else {
            pagenumber >= pagecount ? $Button.addClass('pgEmpty') : 
            $Button.click(function() { buttonClickCallback(destPage); });
        }
        return $Button;
    }
    $.fn.pager.defaults = {
        pagenumber: 1,
        pagecount: 1
    };
})(jQuery);