/** jQuery pager plugin* Version 1.0 (12/22/2008)* @requires jQuery v1.2.6 or later** Example at: http://jonpauldavies.github.com/JQuery/Pager/PagerDemo.html** Copyright (c) 2008-2009 Jon Paul Davies* Dual licensed under the MIT and GPL licenses:* http://www.opensource.org/licenses/mit-license.php* http://www.gnu.org/licenses/gpl.html* * Read the related blog post and contact the author at http://www.j-dee.com/2008/12/22/jquery-pager-plugin/** This version is far from perfect and doesn't manage it's own state, therefore contributions are more than welcome!** Usage: .pager({ pagenumber: 1, pagecount: 15, buttonClickCallback: PagerClickTest });** Where pagenumber is the visible page number*       pagecount is the total number of pages to display*       buttonClickCallback is the method to fire when a pager button is clicked.** buttonClickCallback signiture is PagerClickTest = function(pageclickednumber) * Where pageclickednumber is the number of the page clicked in the control.** The included Pager.CSS file is a dependancy but can obviously tweaked to your wishes* Tested in IE6 IE7 Firefox & Safari. Any browser strangeness, please report.*/(function($) {     $.fn.pager = function(options) {         var opts = $.extend({}, $.fn.pager.defaults, options);         return this.each(function() {         /* empty out the destination element and then render out the pager with the supplied options  */          $(this).empty().append(renderpager(parseInt(options.pagenumber), parseInt(options.pagecount), options.buttonClickCallback));                        /* specify correct cursor activity  */          $('.pages li').mouseover(function() { document.body.style.cursor = "pointer"; }).mouseout(function() { document.body.style.cursor = "auto"; });        });    };     /* render and return the pager with the supplied options */   function renderpager(pagenumber, pagecount, buttonClickCallback) {         /* setup $pager to hold render */       var $pager = $('<ul class="pages"></ul>');         /* add in the previous and next buttons  */       $pager.append(renderButton('first', pagenumber, pagecount, buttonClickCallback)).append(renderButton('prev', pagenumber, pagecount, buttonClickCallback));         /* pager currently only handles 10 viewable pages ( could be easily parameterized, maybe in next version ) so handle edge cases */       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;        }         /* loop thru visible pages and render buttons  */      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);        }         /* render in the next and last buttons before returning the whole rendered control back. */       $pager.append(renderButton('next', pagenumber, pagecount, buttonClickCallback)).append(renderButton('last', pagenumber, pagecount, buttonClickCallback));         return $pager;    }     /* renders and returns a 'specialized' button, ie 'next', 'previous' etc. rather than a page number button*/    function renderButton(buttonLabel, pagenumber, pagecount, buttonClickCallback) {         var $Button = $('<li class="pgNext">' + buttonLabel + '</li>');         var destPage = 1;         /* work out destination page for required button type*/        switch (buttonLabel) {            case "first":                destPage = 1;                break;            case "prev":                destPage = pagenumber - 1;                break;            case "next":                destPage = pagenumber + 1;                break;            case "last":                destPage = pagecount;                break;        }         /* disable and 'grey' out buttons if not needed. */       if (buttonLabel == "first" || buttonLabel == "prev") {            pagenumber <= 1 ? $Button.addClass('pgEmpty') : $Button.click(function() { buttonClickCallback(destPage); });        }        else {            pagenumber >= pagecount ? $Button.addClass('pgEmpty') : $Button.click(function() { buttonClickCallback(destPage); });        }         return $Button;    }     /* pager defaults. hardly worth bothering with in this case but used as placeholder for expansion in the next version  */  $.fn.pager.defaults = {        pagenumber: 1,        pagecount: 1    }; })(jQuery);