var pageNumber = 0;
var pagescount=0;
Event.observe(window, 'load', function() {
	GetPhotos(pageNumber++);
	
	Event.observe($("lnkNext"), "click", function() {
		$('Files').innerHTML = '';
	   if(pageNumber<=pagescount)
	   {
	   		GetPhotos(pageNumber++);
	   }
	   else
	   {
	      pageNumber=1;
	      GetPhotos();
	   }

		
	});
	Event.observe($("lnkPrevious"), "click", function() {
		$('Files').innerHTML = '';
		if(pageNumber==0)
		{
		   GetPhotos();
		}
		else if(pageNumber>0)
		{
		 GetPhotos(pageNumber--);
		}
		
	});

});

function GetPhotos() {
	var url = "DownloadCenter.asmx/GetFiles";
	$('loadImg').style.display='block';
	var lang=$('lbllang').innerHTML;
	new Ajax.Request(url,
		{
			method: 'post',
			contentType: 'application/json',
			encoding: 'utf-8',
			postBody: "{PN: " + pageNumber + ",lang:'"+lang+"'}",
			onSuccess: function(transport) {
			//alert(transport.responseText);
			var res = eval("(" + transport.responseText + ")");
			var r = res.d;
			$('Files').innerHTML = r.HtmlText;
		    pagescount=r.pagescount;
			$('loadImg').style.display='none';
			initLightbox();
			}
		});

}