Javascript: reading binary data from the registry

Today it became necessary to find out the vertical offset of the Windows taskbar from an HTA application using JavaScript.
The required value is in HKEY_CURRENT_USER \ Software \ Microsoft \ Internet Explorer \ Desktop \ Components \ 0, binary parameter Position.

The result is the following code:
var wsh = new ActiveXObject("WScript.Shell");
var key = "HKEY_CURRENT_USER\\Software\\Microsoft\\Internet Explorer\\Desktop\\Components\\0\\Position";
var regdata=wsh.RegRead(key)
var retval=parseInt('0x'+regdata.getItem(17).toString(16)+regdata.getItem(16).toString(16));


All this and much more in the HTA project HTAPrEx - HTA Remote Process Explorer