function per_page_change(id,cat,page) {
	var obj = document.getElementById(id);
	if ( obj && obj.selectedIndex > -1 ) {
		window.location = '?c=' + cat + '&page=' + page + '&pp=' + obj.options[ obj.selectedIndex ].value;
	}
}

function order_change(id,cat,page) {
	var obj = document.getElementById(id);
	if ( obj && obj.selectedIndex > -1 ) {
		window.location = '?c=' + cat + '&page=' + page + '&s=' + obj.options[ obj.selectedIndex ].value;
	}
}