a.avalanche_over { width:700px; height:623px; display:block; background: transparent url('/bwu/images/overhead.jpg') no-repeat left bottom;}

a.avalanche_over:hover { width:700px; height:623px; display:block; background: transparent url('/bwu/images/overhead.jpg') no-repeat left top;}

a.avalanche_comp { width:701px; height:565px; display:block; background: transparent url('/bwu/images/h3h1comparison.jpg') no-repeat left top;}

a.avalanche_comp:hover { width:701px; height:565px; display:block; background: transparent url('/bwu/images/h3h1comparison.jpg') no-repeat left bottom;}

a.blackout_over { width:703px; height:679px; display:block; background: transparent url('/bwu/images/blackoutoverhead.jpg') no-repeat left bottom;}

a.blackout_over:hover { width:703px; height:679px; display:block; background: transparent url('/bwu/images/blackoutoverhead.jpg') no-repeat left top;}

a.blackout_comp { width:640px; height:427px; display:block; background: transparent url('/bwu/images/BLcomparison.jpg') no-repeat left top;}

a.blackout_comp:hover { width:640px; height:427px; display:block; background: transparent url('/bwu/images/BLcomparison.jpg') no-repeat left bottom;}