<!--
function MM_findObj(n, d) {//v4.0
  var p,i,x;if(!d) d=document;if((p=n.indexOf("?"))>0&&parent.frames.length){d=parent.frames[n.substring(p+1)].document;n=n.substring(0,p);}if(!(x=d[n])&&d.all) x=d.all[n];for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);if(!x && document.getElementById) x=document.getElementById(n); return x;}
function MM_showHideLayers() {//v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;for (i=0;i<(args.length-2);i+=3) if ((obj=MM_findObj(args[i]))!=null) {v=args[i+2];if (obj.style) {obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v;}obj.visibility=v;}}
function EOf() {MM_showHideLayers('s','','hide','h','','hide')}
function Sho() {MM_showHideLayers('s','','show','h','','show')}
// -->