(function() {  

jQuery.fn.pager = function(clas, options) {

	var cContainers = this; 

	var settings = {		
		navId: 'nav',
		navClass: 'nav',
		navAttach: 'append',
		highlightClass: 'highlight',
		prevText: '«',
		nextText: '»',
		linkText: null,
		linkWrap: null,
		height: null
	}
	if(options) jQuery.extend(settings, options);
	
	return cContainers.each( function () {

		var me = jQuery(this);
		var navid = '#' + settings.navId;
		var size = jQuery(clas, me).not(navid).size();
		var i;
		if (settings.linkAnchor == null){
			i = 0;
		}
		else{
			i = (window.location.hash.substring(window.location.hash.lastIndexOf('#')) == -1) ? 0 : findArray(settings.linkAnchor, window.location.hash.substring(window.location.hash.lastIndexOf('#')));
		}
	  	
		
		function init () {
			size = jQuery(clas, me).not(navid).size();
			if(settings.height == null) {			
				settings.height = getHighest();
			}
			if(size > 1) {
				makeNav();
				show();
				highlight();
			}			
			sizePanel();
			if(settings.linkWrap != null) {
				linkWrap();
			}
		}
		function makeNav () {		
			var str = '<div id="'+settings.navId+'" class="'+settings.navClass+'">';
			str += '<a href="#prev" rel="prev">'+settings.prevText+'</a>';
			for(var i = 0; i < size; i++) {
				var j = i+1;
				str += '<a href="#';
				str += (settings.linkAnchor == null) ? '' : settings.linkAnchor[j-1];
				str += '" rel="'+ j +'">';
				str += (settings.linkText == null) ? j : settings.linkText[j-1];
				str += '</a>';
			}
			str += '<a href="#next" rel="next">'+settings.nextText+'</a>';
			str += '</div>';
			switch (settings.navAttach) {		
				case 'before':
					jQuery(me).before(str);
					break;
				case 'after':		
					jQuery(me).after(str);
					break;
				case 'prepend':
					jQuery(me).prepend(str);
					break;
				default:
					jQuery(me).append(str);
					break;
			}
		}
		function show () {
			jQuery(me).find(clas).not(navid).hide();
			var show = jQuery(me).find(clas).not(navid).get(i);
			jQuery(show).show();
		}		
		function highlight () {
			jQuery(navid).find('a').removeClass(settings.highlightClass);
			var show = jQuery(navid).find('a').get(i+1);			
			jQuery(show).addClass(settings.highlightClass);
		}

		function sizePanel () {
			if(jQuery.browser.msie) {
				jQuery(me).find(clas).not(navid).css( {
					height: settings.height
				});	
			} else {
				jQuery(me).find(clas).not(navid).css( {
					minHeight: settings.height
				});
			}
		}
		function getHighest () {
			var highest = 0;
			jQuery(me).find(clas).not(navid).each(function () {
				
				if(this.offsetHeight > highest) {
					highest = this.offsetHeight;
				}
			});
			highest = highest + 10 + "px";
			return highest;
		}
		function getNavHeight () {
			var nav = jQuery(navid).get(0);
			return nav.offsetHeight;
		}
		function linkWrap () {
			jQuery(me).find(navid).find("a").wrap(settings.linkWrap);
		}
		function findArray (array, text) {
			if (array == null){
				return text;
			}
			for(var i = 0; i < size; i++) {
				if ('#' + array[i] == text){
					return i;
				}
			}
			return 0;
		}

		init();

		jQuery(navid).find("a").click(function () {
			var j;
			if (settings.linkAnchor == null){
				j = jQuery(this).attr('rel');
			}
			else{
				j = jQuery(this).attr('href').substring(jQuery(this).attr('href').lastIndexOf('#'));
			}

			if(j == '#next' || j == 'next') {
				if(i + 1 < size) {
					i = i + 1;
					if (settings.linkAnchor != null){
						window.location.hash = '#' + settings.linkAnchor[i];
					}
				}
			}
			else if(j == '#prev' || j == 'prev') {
				if(i > 0) {	
					i = i - 1;
					if (settings.linkAnchor != null){
						window.location.hash = '#' + settings.linkAnchor[i];
					}
				}
			}
			else {
				if (settings.linkAnchor == null){
					i = j-1;
				}
				else{
					i = findArray(settings.linkAnchor, j.substring(j.lastIndexOf('#')));
					window.location.hash = j.substring(j.lastIndexOf('#'));
				}
			}

			show();
			highlight();
			return false;
		});
	});	
}

})(jQuery);