/*********************************Configuration*******************************/

var PAGE_COUNT = 9; 
var BASE_PAGE  = '';
var PAGE_SUFX  = '.html';

/*****************************************************************************/


var U=location.pathname;

function prevpage()
{
	var P = U.getUrlPageNo(); 
	P--;
	if (P <= 0)
	{
		P=PAGE_COUNT;
	}
	
	location.href= BASE_PAGE + P + PAGE_SUFX;
}

function nextpage()
{
	var P = U.getUrlPageNo(); 
	P++;
	if(P > PAGE_COUNT)
	{
		P=1;
	}
	
	location.href= BASE_PAGE + P + PAGE_SUFX;
}

String.prototype.getUrlPageNo = function()
{
	var o = this.lastIndexOf("/")+1;
	var n = this.substr(o);
	n = n.replace(/[^\d]/g,'');
	
	return n;
	
}