function MM_findObj(n, d) { //v4.01
  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 && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,
    obj2=MM_findObj('arrow')
    obj1=MM_findObj('tags_in_cloud')
  if (obj1.style.display=="none") 
  {

    		obj1.style.display="";
    		obj2.src="/img/arrow1.gif";

  }
  else 
  {
    		obj1.style.display="none";
    		obj2.src="/img/arrow2.gif";
   }
}