.b1{ background:url(http://minihome.truelife.com/home/img/minihome/popup_b_01.png); }
.b1{ behavior: url(/home/js/iepngfix.htc); } 
.c2{ background:url(http://minihome.truelife.com/home/img/minihome/popup_c_02.png); }
.c2{ behavior: url(/home/js/iepngfix.htc); }