Javascript Onclick menu

[Disturbed]

What I need is, fot the window to pop up on the top


// ----- Popup Control ---------------------------------------------------------

function at_display(x)
{
win = window.open();
for (var i in x) win.document.write(i+' = '+x[i]+'<br>');
}

// ----- Show Aux -----

function at_show_aux(parent, child)
{
var p = document.getElementById(parent);
var c = document.getElementById(child);

var top = (c["at_position"] == "y") ? p.offsetHeight+2 : 0;
var left = (c["at_position"] == "x") ? p.offsetWidth +2 : 0;

for (; p; p = p.offsetParent)
{
top += p.offsetTop;
left += p.offsetLeft;
}

c.style.position = "absolute";
c.style.top = top +'px';
c.style.left = left+'px';
c.style.visibility = "visible";
}

// ----- Show -----

function at_show()
{
p = document.getElementById(this["at_parent"]);
c = document.getElementById(this["at_child" ]);

at_show_aux(p.id, c.id);

clearTimeout(c["at_timeout"]);
}

// ----- Hide -----

function at_hide()
{
c = document.getElementById(this["at_child"]);

c["at_timeout"] = setTimeout("document.getElementById('"+c.id+"').style.visibility = 'hidden'", 333);
}

// ----- Click -----

function at_click()
{
p = document.getElementById(this["at_parent"]);
c = document.getElementById(this["at_child" ]);

if (c.style.visibility != "visible") at_show_aux(p.id, c.id);
else c.style.visibility = "hidden";

return false;
}

// ----- Attach -----

// PARAMETERS:
// parent - id of visible html element
// child - id of invisible html element that will be dropdowned
// showtype - "click" = you should click the parent to show/hide the child
// "hover" = you should place the mouse over the parent to show
// the child
// position - "x" = the child is displayed to the right of the parent
// "y" = the child is displayed below the parent
// cursor - Omit to use default cursor or check any CSS manual for possible
// values of this field

function at_attach(parent, child, showtype, position, cursor)
{
p = document.getElementById(parent);
c = document.getElementById(child);

p["at_parent"] = p.id;
c["at_parent"] = p.id;
p["at_child"] = c.id;
c["at_child"] = c.id;
p["at_position"] = position;
c["at_position"] = position;

c.style.position = "absolute";
c.style.visibility = "hidden";

if (cursor != undefined) p.style.cursor = cursor;

switch (showtype)
{
case "click":
p.onclick = at_click;
p.onmouseout = at_hide;
c.onmouseover = at_show;
c.onmouseout = at_hide;
break;
case "hover":
p.onmouseover = at_show;
p.onmouseout = at_hide;
c.onmouseover = at_show;
c.onmouseout = at_hide;
break;
}
}