function Pager(tableName, itemsPerPage) {
    this.tableName = tableName;
    this.itemsPerPage = itemsPerPage;
    this.currentPage = 1;
    this.pages = 0;
    this.inited = false;
    
    this.showRecords = function(from, to) {        
        var rows = document.getElementById(tableName).getElementsByTagName("li");
        // i starts from 1 to skip table header row
        for (var i = 1; i < rows.length; i++) {
            if (i < from || i > to)  
                rows[i].style.display = 'none';
            else
                rows[i].style.display = '';
        }
    }
    
    this.showPage = function(pageNumber) {
    	if (! this.inited) {
    		alert("not inited");
    		return;
    	}

        var oldPageAnchor = document.getElementById('pg'+this.currentPage);
        oldPageAnchor.className = 'modulePaginationPages';
        
        this.currentPage = pageNumber;
        var newPageAnchor = document.getElementById('pg'+this.currentPage);
        newPageAnchor.className = 'modulePaginationSelectedPage';
        
        var from = (pageNumber - 1) * itemsPerPage + 1;
        var to = from + itemsPerPage - 1;
        this.showRecords(from, to);
    }   


    this.showNewsPage = function(pageNumber) {
    	if (! this.inited) {
    		alert("not inited");
    		return;
    	}

        
        this.currentPage = pageNumber;
          
        var from = (pageNumber - 1) * itemsPerPage + 1;
        var to = from + itemsPerPage - 1;
        this.showRecords(from, to);
    }

    
    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.NewsPrev = function() {
        if (this.currentPage > 1)
            this.showNewsPage(this.currentPage - 1);
    }
    
    this.NewsNext = function() {
        if (this.currentPage < this.pages) {
            this.showNewsPage(this.currentPage + 1);
        }
    }
    
    this.init = function() {
        var rows = document.getElementById(tableName).getElementsByTagName("li");
        var records = (rows.length - 1); 
        this.pages = Math.ceil(records / itemsPerPage);
        this.inited = true;
    }

    this.showPageNav = function(pagerName, positionId) {
    	if (! this.inited) {
    		alert("not inited");
    		return;
    	}
    	var element = document.getElementById(positionId);
    	
    	
    	        if ( element.id == "TravelNewsPagination" )
    	        {
    	                var travelNewsHtml = '<a href="#" onclick="' + pagerName + '.NewsPrev(); return false;" class="previousLink xp-t-body">Pr&#233;c&#233;dent</a>';
                        travelNewsHtml += '<a href="#" onclick="'+pagerName+'.NewsNext(); return false;" class="nextLink xp-t-body">Suivant</a>';            
                        element.innerHTML = travelNewsHtml;
    	        }
    	        else
    	        {
    	
    	                var pagerHtml = '<a href="#" onclick="' + pagerName + '.prev(); return false;" class="xp-t-body modulePaginationPrevious">Pr&#233;c&#233;dent</a>';
                        for (var page = 1; page <= this.pages; page++) 
                            pagerHtml += '<a href="#" id="pg' + page + '" class="xp-t-body modulePaginationPages" onclick="' + pagerName + '.showPage(' + page + '); return false;">' + page + '</a>';
                        pagerHtml += '<a href="#" onclick="'+pagerName+'.next(); return false;" class="xp-t-body modulePaginationNext">Suivant</a>';            
                        element.innerHTML = pagerHtml;
                }
                
        
    }
}