function MM_findObj(n, d) {  //xian
//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() 
{ 
  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;
	} 
}