preload([
    'images/boxes-why-were-different-r.jpg',
    'images/boxes-why-were-different-r.jpg',
    'images/boxes-client-list-r.jpg',
    'images/boxes-our-history-r.jpg'
    
]);


$(document).ready(function() {



/* $('.changesrc').attr('src', $('.changesrc').attr('src').replace('images', 'images/alt')); */



$('#main ul li a').hover(function(){
	var src = $(this).children('img').attr('src');
	$(this).children('img').attr('src', $(this).children('img').attr('src').replace('.jpg', '-r.jpg'));
}, function(){

	$(this).children('img').attr('src', $(this).children('img').attr('src').replace('-r.jpg', '.jpg'));
});
/*
$('#main ul li a').hover(function(){
var src = $(this).children('img').attr('src');

	if (typeof src != "undefined") {
    var newsrc = $(this).attr("src", src.replace(/\.jpg$/i, "-r.jpg");
}

alert(newsrc);
});
*/

});


function preload(arrayOfImages) {
    $(arrayOfImages).each(function(){
        $('<img/>')[0].src = this;
        // Alternatively you could use:
        // (new Image()).src = this;
    });
}