I am looking for a tool to convert some simple visual basic functions to Javascript. I know that it is generally very difficult task but I need to convert only a simple constructions e.g.

dim a

a=1

if a >2 then a=a+1

to

var a;

a=1;

if(a>2)a=a+1

I can do it by hand but a tool similar to Convert C# to VB.NET would be great help
I am looking for something very simple so even vb vb.net difference doesn't matter too much. I even have some VB6 functions which I need to have in Javascript. I would like to avoid boring edit/search/replace task.