var prev=null;
var t=null;
function showSubMenu(n,y,x) {
	if(t!=null) clearTimeout(t);
	if(prev!=null) prev.style.visibility='hidden';
	prev=document.all['submenu'+n];
	document.all['submenu'+n].style.filter='Alpha(Opacity=0,FinishOpacity=0,Style=1)';
	document.all['submenu'+n].style.left=(x==null)?event.x+10:x;
	document.all['submenu'+n].style.top=(y==null)?event.y-10:y;
	document.all['submenu'+n].style.visibility='visible';
	changeOpacity(n,12,20);
}

function changeOpacity(n,p,s) {
	document.all['submenu'+n].style.filter='Alpha(Opacity='+p+',FinishOpacity='+p+',Style=1)';
	if(p<92) t=setTimeout("changeOpacity("+n+","+(p+s)+","+s+")",0);
}

function checkVisibility(obj) {
	objTop=Number(obj.style.top.substring(0,obj.style.top.indexOf("p")))+2;
	objLeft=Number(obj.style.left.substring(0,obj.style.left.indexOf("p")))+2;
	if((event.x<objLeft)||(event.x>objLeft+obj.clientWidth-3)||(event.y<objTop)||(event.y>objTop+obj.clientHeight-3)) obj.style.visibility='hidden';
}

function msgwin(file) {
  subwin= open(file, "subwin", "width=400,height=400, scrollbars=1, resizable=1");
  subwin.focus();
}