var page = 0;
var pagegroup = 1

function friendsResponse(transport) {
	var result = transport.responseText.evalJSON();
	if (page > 0) {
		$('rollback').style.display = 'block';
	}else{
		$('rollback').style.display = 'none';
	}
	

	if (result.isnextpage == 1) {
		$('roll').style.display = 'block';
		
	}
	else {
		$('roll').style.display = 'none';
	}
	$('friends').innerHTML = result.friends;
	
}

function groupsResponse(transport){
	//alert(transport.responseText);
	var result = transport.responseText.evalJSON();
	
	if (pagegroup > 1) {
		$('rollgroupsback').style.display = 'block';
	}else{
		$('rollgroupsback').style.display = 'none';
	}
	
	if (result.isnextpage == 1) {
		$('rollgroups').style.display = 'block';
		
	}
	else {
		$('rollgroups').style.display = 'none';
	}
	$('groups').innerHTML = result.groups;
	
}



function roll(user_id) {
	
	page = page + 1;
	var myAjax = new Ajax.Request(baseUrl+'/studenci/ajaxroll',{method: 'get', parameters: {page : page, id: user_id},onComplete: friendsResponse});
	
}

function rollback(user_id){
	if (page > 0)
	page = page - 1;
	var myAjax = new Ajax.Request(baseUrl+'/studenci/ajaxroll',{method: 'get', parameters: {page : page, id: user_id},onComplete: friendsResponse});
	
}	

function rollgroups(user_id){
	pagegroup =pagegroup + 1;
	var myAjax = new Ajax.Request(baseUrl+'/studenci/ajaxgroupsroll',{method: 'get', parameters: {pagegroup : pagegroup, id: user_id},onComplete: groupsResponse});
}

function rollgroupsback(user_id){
	if (pagegroup > 0)
	pagegroup =pagegroup - 1;
	var myAjax = new Ajax.Request(baseUrl+'/studenci/ajaxgroupsroll',{method: 'get', parameters: {pagegroup : pagegroup, id: user_id},onComplete: groupsResponse});
	
}