var b1 = new Image();
var b2 = new Image();

var b1h = new Image();
var b2h = new Image();

b1.src = 'http://cdn.allteamapparel.com/images/top_level/fundraising/btn_learnmore.png';
b2.src = 'http://cdn.allteamapparel.com/images/top_level/fundraising/btn_signup.png';

b1h.src = 'http://cdn.allteamapparel.com/images/top_level/fundraising/btn_learnmore_hover.png';
b2h.src = 'http://cdn.allteamapparel.com/images/top_level/fundraising/btn_signup_hover.png';