function s(obj) {if (obj.css) obj.css.visibility='visible';}
function h(obj) {if (obj.css) obj.css.visibility='hidden' ;}

function GetCss(was,nest) {
  if (document.layers) if (nest) this.css=document.layers[nest].document.layers[was]; else this.css=document.layers[was];
  if (document.all) this.css=document.all[was].style;
  if (document.getElementById) this.css=document.getElementById(was).style;
return this;
}

function GetWidth() {
  if (document.layers) w=innerWidth;
  if (document.all) w=document.body.offsetWidth;
  if ((document.getElementById)&&(!document.all)) w=innerWidth;
return w;
}

function GetHeight() {
  if (document.layers) return innerHeight;
  if (document.all) return document.body.offsetHeight;
  if ((document.getElementById)&&(!document.all)) return innerHeight;
}