var thumbsPerPageLogos = 5;
var totalLogos = 0;
var thumbWidthLogos = 90;
var currentThumbLogos = 0;
var animSpeed = 300;


function initScrollPositionLogos() {
	var distanceLogos = thumbWidthLogos * (currentThumbLogos) ;
	$('#logo_thumbnails').css('left', "-" + distanceLogos + "px");
}			

function currentBottomProjectLogos() {
	return currentThumbLogos + thumbsPerPage;
}

function checkNavArrowsLogos() {
	if (canScrollLeftLogos()) {
		$('.logo_container .leftControl a.logos').css({ backgroundPosition: "top center", cursor: "pointer" });
	}
	else {	
		$('.logo_container .leftControl a.logos').css({ backgroundPosition: "top left", cursor: "default" });		
	}

	if (canScrollRightLogos()) {
		$('.logo_container .rightControl a.logos').css({ backgroundPosition: "top center", cursor: "pointer" });		
	}
	else {
		$('.logo_container .rightControl a.logos').css({ backgroundPosition: "top right", cursor: "default" });		
	}
}	

function canScrollRightLogos() {
	return (currentThumbLogos > 0);
}			

function canScrollLeftLogos() {
	return (currentBottomProjectLogos() < totalLogos);
}			

function scrollRightLogos() {
	var distanceLogos = thumbWidthLogos * (currentThumbLogos + 1);

	$("#logo_thumbnails").animate({
		top: 0,
		left: -distanceLogos
	}, animSpeed );

	currentThumbLogos += 1;					
	checkNavArrowsLogos();					
}			

function scrollLeftLogos() {
	var distanceLogos = thumbWidthLogos * (currentThumbLogos - 1);

	$("#logo_thumbnails").animate({ 
		top: 0,
		left: -distanceLogos
	}, animSpeed );

	currentThumbLogos -= 1;					
	checkNavArrowsLogos();
}


$(document).ready(function() {
	
	var totalulwidth = thumbWidthLogos * totalLogos;

	$("#logo_thumbnails").css({
		width: totalulwidth
	});


});