var AppVerNo = navigator.appVersion.substring(0,1)
var NoOfMenus = 10
//==========================================================
function showMenu(MenuID){

	if (navigator.appName == "Netscape") {
		if (AppVerNo<5) {
			document.layers[MenuID].visibility="show";
		} else {
			var what=document.getElementByID("menu" + MenuID)
			what.style.visibility="visible";
		}
	} else {
		var what="menu" + MenuID
		document.all.item(what).style.visibility="visible";
	}
}
//==========================================================
function hideMenu(MenuID){

	if (navigator.appName == "Netscape") {
		if (AppVerNo<5) {
			document.layers[MenuID].visibility="hide";
		} else {
			var what=document.getElementByID("menu" + MenuID)
			what.style.visibility="hidden";
		}
	} else {
		var what="menu" + MenuID
		document.all.item(what).style.visibility="hidden";
	}
}
//==========================================================
function hideAllMenus(){

	for (i=0; i<NoOfMenus; i++ )
	{
	  if (navigator.appName=="Netscape"){		
	    if (AppVerNo<5){
          document.layers[i].visibility="hide";
		}
		else{
	      var what=document.getElementById("menu" + i)
 		  what.style.visibility="hidden";
		}
      }else{
	    var what='menu' + i
        document.all.item(what).style.visibility="hidden";
	  }
	}
}
//==========================================================
function hideAllSubMenus(){

	for (i=5; i<NoOfMenus; i++ )
	{
	  if (navigator.appName=="Netscape"){		
	    if (AppVerNo<5){
          document.layers[i].visibility="hide";
		}
		else{
	      var what=document.getElementById("menu" + i)
 		  what.style.visibility="hidden";
		}
      }else{
	    var what='menu' + i
        document.all.item(what).style.visibility="hidden";
	  }
	}
}