$(document).ready(function(){
    var sections = {
        "e" : "Environmental",
        "a" : "Animal Liberation",
        "r" : "Revolution",
        "t" : "Transcendence",
        "h" : "Human Rights"
    };

    for (var section in sections) {
        $("#" + section +  " img").hover(function() {
                this.src = this.src.replace(".png", "_hover.png");
                $("#title-text h1 span").hide();
                $("#title-text h1 span").fadeIn("slow");
                $("#title-text h1 span").text(this.alt);
            }, function() {
                this.src = this.src.replace("_hover", "");
                $("#title-text h1 span").fadeOut("slow");
            }
        );
    }
});