var nn4 = (document.layers) ? true : false;
var ie = (document.all) ? true : false;
var dom = (document.getElementById && !document.all) ? true : false;

function browser(id){
  if(nn4) {
  path = document.layers[id];
  }
  else if(ie) {
  path = document.all[id];
  } 
  else {
  path = document.getElementById(id);
  }
return path ;

}

function hideLayer(id){
var layer = browser(id); 
   if(nn4){
   layer.visibility = "hidden" ;
   }
   else {
   layer.style.visibility = "hidden";
   }
} 

function showLayer(id){
var layer = browser(id); 
   if(nn4){
   layer.visibility = "visible" ;
   }
   else {
   layer.style.visibility = "visible";
   }
} 


function findPosX(obj)
{
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft;
			obj = obj.offsetParent;
		}
	}
	else if (obj.x){
		curleft += obj.x;
	}
	return curleft;
}

function findPosY(obj)
{
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop;
			obj = obj.offsetParent;
		}
	}
	else if (obj.y){
		curtop += obj.y;
	}
	return curtop;
}
function showMenu(id,ctner){
	document.getElementById(id).style.left = findPosX(document.getElementById(ctner))+95;
	document.getElementById(id).style.top = findPosY(document.getElementById(ctner));

	showLayer(id);
}