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; 
    }
}

ns=window.navigator.appName == "Netscape"
ie=window.navigator.appName == "Microsoft Internet Explorer"

function openIt(x) {

// NS ÀÇ °æ¿ì

  if(ns) {
    showbox= document.layers[x+1]
    showbox.visibility = "show";
    showbox.top=0;
       
    var items = 8      ; // ¸Þ´ºÀÇ °¹¼ö
    for (i=1; i<=items; i++) {
      elopen=document.layers[i]
        if (i != (x + 1)) { elopen.visibility = "hide" }
    }
  }    

// IE ÀÏ °æ¿ì

  if(ie) {
    curEl = event.toElement
    curEl.style.background = "orange"   // ¸¶¿ì½º ¿À¹ö½Ã ¹è°æ»ö

    showBox = document.all.box[x];
    showBox.style.visibility = "visible";
    showBox.style.top =154;  // ¼­ºê¸Þ´ºÀÇ À§ÂÊ¿©¹é
         
    var items = 8  // ¸Þ´ºÀÇ °¹¼ö
    for (i=0; i<items; i++) {
      elOpen=document.all.box[i]
      barEl=document.all.mnubar[i]
      if (i != x){ 
        elOpen.style.visibility = "hidden" 
        barEl.style.background = "orange" // ºñÈ°¼º¸Þ´º ¹è°æ»ö
		  }
    }
  }
}

function closeIt() {
  var items = 8 // ¸Þ´ºÀÇ °¹¼ö
    for (i=0; i<items; i++) {
      if(ie){
        document.all.box[i].style.visibility = "hidden"
        barEl=document.all.mnubar[i]
        barEl.style.background = ""
      }
      if(ns){ document.layers[i+1].visibility = "hide"}          
   }
}