/* preload images */
$(document).ready(function(){  
	var image1 = $('<img />').attr('src', 'twitter-on.jpg');
	var image2 = $('<img />').attr('src', 'facebook-on.jpg');
	var image3 = $('<img />').attr('src', 'flickr-on.jpg');
	var image4 = $('<img />').attr('src', 'rss-on.jpg');
	var image5 = $('<img />').attr('src', 'blogspot-on.jpg');
});


/* swap images on hover */
$(document).ready(function(){  
    $('#sidebar .twitter').hover(function () {
        this.src = 'twitter-on.jpg';
    }, function () {
        this.src = 'twitter-off.jpg';
    });
	
	$('#sidebar .facebook').hover(function () {
        this.src = 'facebook-on.jpg';
    }, function () {
        this.src = 'facebook-off.jpg';
    });
	
	$('#sidebar .flickr').hover(function () {
        this.src = 'flickr-on.jpg';
    }, function () {
        this.src = 'flickr-off.jpg';
    });
	
	$('#sidebar .rss').hover(function () {
        this.src = 'rss-on.jpg';
    }, function () {
        this.src = 'rss-off.jpg';
    });
	
	$('#sidebar .blogspot').hover(function () {
        this.src = 'blogspot-on.jpg';
    }, function () {
        this.src = 'blogspot-off.jpg';
    });
});