function inf(id){if(document.layers){return document.layers[id];}if(document.getElementById){return document.getElementById(id);}if(document.all){return document.all[id];}if(document[id]){return document[id];}return false;}
function dv(t){d=inf(t);eval("d"+".style.visibility='visible'");}
function dh(t){d=inf(t);eval("d"+".style.visibility='hidden'");}
function vis(divname, stat){
 if(stat==1){dv(divname);}
 else {dh(divname);}
}