$(document).ready(function() {
    //hide elements to be animated
    $('#h_welcome,#splash_nav').hide();
    
    //set flag so animation only occurs once
    var hasAnimated = false;
    
    //when mouse moves, animate
    $('body').mousemove(function() {
        if (hasAnimated == false) {
            hasAnimated = true;
            $('#h_welcome').fadeTo('1', 0, function() {
                $(this).fadeTo('1.5', 1.0, function() {
                    $('#splash_nav').fadeTo('1', 0, function() {
                        $('#splash_nav').fadeTo('1.0', 1.0);
                        $('#splash_nav a').fadeTo('1.0', 1.0);//need to fade in anchor tags or IE won't support :hover
                    });
                });                
            });
            
        }
        
    });
});