function hide_right_banner(){
    // alert("resizing "+ window.innerWidth+" "+document.body.offsetWidth);
    var targ=document.getElementById("r_banner");
    if(document.body.offsetWidth<=(800) | document.body.offsetWidth==(888) ) {
	targ.style.display='none';
	// alert("set style display none");
    } else { 
	targ.style.display='';
	// alert("set style display '' (show)");
    }
}