function Pager(id, itemsPerPage, records) {

    this.id = id;

    this.itemsPerPage = itemsPerPage;

    this.currentPage = 1;

    this.pages = 0;

    this.inited = false;

    

    this.init = function() {

//      var records = (document.getElementById(this.id).childNodes.length - 1); 

        this.pages = Math.ceil(records / this.itemsPerPage);

        this.inited = true;

    }

    

    this.showRecords = function(from, to) {        

        var items = document.getElementById(this.id).getElementsByTagName("li");

        for (var i = 0; i < items.length; i = i + 1) {   	

            if (i < from || i > to) items[i].style.display = 'none';

            else items[i].style.display = '';

        }

    }

    

    this.showPage = function(pageNumber) {

    	if (!this.inited) return;

        this.currentPage = pageNumber;

        var from = (pageNumber - 1) * this.itemsPerPage;

        var to = from + this.itemsPerPage - 1;

        this.showRecords(from, to);

        

        var pgNext = document.getElementById('pgNext');

        var pgPrev = document.getElementById('pgPrev');

        var pgNextBlank = document.getElementById('pgNextBlank');

        var pgPrevBlank = document.getElementById('pgPrevBlank');

        var pgDiv = document.getElementById('pgDiv');

        if (this.currentPage == this.pages) {

            pgNext.style.display = 'none';

			pgNextBlank.style.display = ''; 

        }

        else {

			pgNext.style.display = '';

			pgNextBlank.style.display = 'none'; 

        }

		if (this.currentPage == 1) {

           pgPrev.style.display = 'none'; 

           pgPrevBlank.style.display = ''; 

        }

        else {

			pgPrev.style.display = '';

			pgPrevBlank.style.display = 'none'; 

		}

    }   

    

    

    this.prev = function() {

        if (this.currentPage > 1) this.showPage(this.currentPage - 1);

    }

    

    

    this.next = function() {

        if (this.currentPage < this.pages) {

        	this.showPage(this.currentPage + 1);

        }

    }                        

	

	

    this.showPageNav = function(pagerName, positionId) {

    	if (!this.inited) return;

    	

    	var elementPrev = document.getElementById(positionId + "Prev");

    	var elementNext = document.getElementById(positionId + "Next");

    	

    	var pagerHtmlPrev = '<span id="pgPrev"><a href="#" onclick="' + pagerName + '.prev();return false;"><img src="i/left.gif" width="20" height="60" alt="Prev" /></a></span><span id="pgPrevBlank"><img src="i/no.gif" width="20" height="60" alt="Prev" /></span>';

        var	pagerHtmlNext = '<span id="pgNext"><a href="#" onclick="' + pagerName + '.next();return false;"><img src="i/right.gif" width="20" height="60" alt="Next" /></a></span><span id="pgNextBlank"><img src="i/no.gif" width="20" height="60" alt="Prev" /></span>';

        

        elementPrev.innerHTML = pagerHtmlPrev;

        elementNext.innerHTML = pagerHtmlNext;

    }

}