function do_prev(){
	eval($('p2json').innerHTML);
	var k = ob.indexOf($('spid').value);
	k_p = ((k-1) >= 0) ? (k-1) : false;
	if (k_p !== false) do_page(ob[k_p]);
}

function do_next() {
	eval($('p2json').innerHTML);
	var k = ob.indexOf($('spid').value);
	k_n = ((k+1) < ob.length) ? (k+1) : false;
	if (k_n !== false) do_page(ob[k_n]);
}

function do_page (spid) {
	$('spid').value = spid;
	var url = 'index.php?page=dinamic_page_ajax&ac=do_page&spid='+spid;
	
	new Ajax.Request(url, {
		method: 'get',
		onCreate: function () {							
			$('navigator_l').update($('ajax_loader').innerHTML);
			document.getElementsByClassName('nav_current', $('page_navigator')).each(function(s) {
				s.className = 'page_navigator';
			});			
			$('nav_'+spid).className = 'nav_current';			
		},
		onSuccess: function(transport) {
			$('list').update('<div id="new_element"></div>'+transport.responseText);
			resetdragableElements();
			initdragableElements();
		},
		onComplete: function () {
			$('navigator_l').update('');			
		}
	});
}