var start = 0;
var s = 0;
var crr = 0;
var interval;


 $(function(){
	$('#sector li:first').show();
	autorun();
	
	var li = $("li", "#sector");
	s = li.size() -1; // Get size of ul
	
	$('#navsector .btnext').click(function(){
		clearInterval(interval);
		
	 	if(start < s){
			goSec(start+1);
		}
		
		autorun();
		return false;
	});
	$('#navsector .btprev').click(function(){
		clearInterval(interval);
		
	 	if(start > 0){
			goSec(start-1);
		}
		autorun();
		return false;
	});
	
});
function btstatus(){
	if(start == 0){
	    $('#navsector .btprev').css({ 'background-position': 'center bottom', cursor: 'normal' });
		$('#navsector .btnext').css({'background-position': 'center top', cursor: 'pointer', cursor: 'hand'});
	}else if(start == 4){
		$('#navsector .btnext').css({'background-position': 'center bottom', cursor: 'normal'});
	}else{
		$('#navsector .btnext').css({'background-position': 'center top', cursor: 'pointer', cursor: 'hand'});
		$('#navsector .btprev').css({'background-position': 'center top', cursor: 'pointer', cursor: 'hand'});
	}
}
function goSec(i){
	
	reset();
	$('#sector li').each(function(e){ //e :that is index of li
		if(e == i){
			hsec = $(this).children('div').children('span.hsect').html() + " ("+ (i+1) +" of "+ (s+1) +")";
			$('#sechead').html(hsec);
			$(this).fadeIn('fast');
			start = i;
			crr = i;
		}
	});
	btstatus();
}
function reset(){
	$('#sector li').each(function(e){ //e :that is index of li
		if(e == crr){
			$(this).hide();
		}
	});
}
function autorun(){
	interval = setInterval('intirun()', 5000);
}
function intirun(){
	start += 1;
	if(start >= 5) start = 0;
	goSec(start);
}