@def FONT_FAMILY "Times New Roman", Georgia, Serif;
@def FONT_SIZE_NORMAL 15px;
@def FONT_NORMAL normal FONT_SIZE_NORMAL FONT_FAMILY;
@def BG_COLOR rgb(235, 239, 249);
@def DIALOG_BORDER_COLOR rgb(107, 144, 218);
@def DIALOG_BG_COLOR BG_COLOR;
@def LEFT_HAND_NAV_WIDTH 180px;
@def LEFT_HAND_NAV_PADDING 3px;
@defmixin size(WIDTH, HEIGHT) {
background-color: BG_COLOR;
text-decoration: none !important;
background-color: DIALOG_BG_COLOR;
border: 1px solid DIALOG_BORDER_COLOR;
margin-left: add(LEFT_HAND_NAV_PADDING,
@mixin size(150px, 55px);
background-image: url('http://www.google.com/images/logo_sm.gif');