@media print {
    
    #tnav_wrap {overflow:hidden;}

    /* Hide right column and widen center column to fill*/
    #cn_col_t {width:639px;} 
    #rt_col {display:none;} 
    
    /* Hide normal header and inline frame, show print versions */
    #hdr,#if,#mission,#if_lg {display:none;}
    #hdr_print,#if_print {display:block;}
    #mission_print {display:block;}
    
    #cn_col {width:500px; min-height:4in; padding-bottom: 2em;}

}