$(document).ready(function(){
	var currentSlide = 1;
	var numImages = 6;
	var i;
	
	
	
	
/*for (i in document.images) {
    if (document.images[i].src) {
        var imgSrc = document.images[i].src;
        if (imgSrc.substr(imgSrc.length-4) === '.png' || imgSrc.substr(imgSrc.length-4) === '.PNG') {
            document.images[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled='true',sizingMethod='crop',src='" + imgSrc + "')";
        }
    }
}*/

	
	$('.navLink').each(function(){
		$(this).mouseover(function() {
  			$(this).attr("src", "images/" + $(this).attr('id') + "_active.png");
  		}).mouseout(function(){
    		$(this).attr("src", "images/" + $(this).attr('id') + ".png");
  		});
	});
	$('.slider').css('opacity', '0');
	$('#slider_1').css('opacity', '1');
	setInterval(function() {
		currentSlide++;
		if(currentSlide > numImages) currentSlide = 1;
		indexRotator(currentSlide);
	}, 5000);

});


function indexRotator(currentSlide) {
	
	var slideDuration = 500;
	
	$('.current').animate({
		opacity: 0
	}, slideDuration, function() {
		$(this).removeClass('current');
	});
	$('.progress img').attr('src','images/blueBall.jpg');
	$('.progress img:eq(' + (currentSlide -1) + ')').attr('src','images/greenBall.jpg');
	//activate next slide
	$('#slider_' + currentSlide).addClass('current');
	
	$('#slider_' + currentSlide).animate({
		opacity: '1'
	}, slideDuration, function() {
	});
	
}