var xpos = 0;
var ypos = 0;
var sdObj;
var ftObj;


function show(n,m){
	noshow();
	sdObj = "";
	ftObj = "";
	xpos = 0;
	ypos = 0;
	sdObj = document.getElementById(n);
	ftObj = document.getElementById(m);

	sdObj.style.visibility="visible";
	getXpos(ftObj);
	xpos += 0;
	getYpos(ftObj);
	ypos += +45;

	sdObj.style.left = xpos + "px";
	sdObj.style.top = ypos + "px";
	sdObj.style.zIndex = "1";
}


function getXpos(obj){
	xpos = obj.offsetLeft;
	if(obj.offsetParent != null){
		xpos += getXpos(obj.offsetParent);
	}
	return xpos;
}


function getYpos(obj){
	ypos = obj.offsetTop;
	if(obj.offsetParent != null){
		ypos += getYpos(obj.offsetParent);
	}
	return ypos;
}


function noshow(){
	var sdval;
	for (i=0;i<7;i++){
		sdval = "sub" + i;
		document.getElementById(sdval).style.visibility = "hidden";
		document.getElementById(sdval).style.zIndex = "0";
	}
}