function MM_findObj(n,d) { //v4.0
	  var p,i,x;  if(!d) d=document; 
	  if(!(x=d[n])&&d.all) x=d.all[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);
	  if(!x && document.getElementByName) x = document.getElementsByName(n);    	  	  
	  return x;

	}

	txt_show = (document.layers) ? ".visibility='show';" : ".style.visibility='visible';";
	txt_hide = (document.layers) ? ".visibility='hide';" : ".style.visibility='hidden';";