.tree TH {background-color: silver; background-image: url(../__img/gradientg.gif); height: 18px;} 
.tree TD {font-size: 10px; border-bottom: silver 1px dashed; border-top: silver 1px dashed;}
.p1 {background-color: #FFEEEE;}
.p2 {background-color: #EEFFEE;}
.p3 {background-color: #EEEEFF;}
.p4 {background-color: #EEDDEE;}