JScript to Get Base Form Library URL

//GET Base URL of an Originating Form Library (WITHOUT a trailing /)

strUri = XDocument.Solution.URI;
strPath = strUri.substring(0, strUri.indexOf("Forms") - 1);
XDocument.UI.Alert(strPath)

//GET Base URL of an Originating Form Library (WITH a trailing /)
strUri = XDocument.Solution.URI;
strPath = strUri.substring(0, strUri.indexOf("Forms"));
XDocument.UI.Alert(strPath)