[RESOLVED] Convert VBScript to Javascript

[MartinLiss]

I'm guessing that my attempt here isn't correct since I've never done Javascript before. Can someone help me out?

<SCRIPT LANGUAGE = "VBScript">
Dim oWindow,oDocument,oSelect,oSelectRange
Set oWindow = window.external.menuArguments
Set oSource = oWindow.event.srcElement 
Set oDocument = oWindow.document
Set oSelect = oDocument.selection
Set oSelectRange = oSelect.createRange()
If oSource.tagName = "TEXTAREA" Then
 oSelectRange.text = "[b]" & oSelectRange.text & "[/b]"
End If
</SCRIPT>

<SCRIPT LANGUAGE = "javascript">;
var oWindow,oDocument,oSelect,oSelectRange
oWindow = window.external.menuArguments
oSource = oWindow.event.srcElement 
oDocument = oWindow.document
oSelect = oDocument.selection
oSelectRange = oSelect.createRange();
if(oSource.tagName == "TEXTAREA"){
 oSelectRange.text = "[b]" + oSelectRange.text + "[/b]";
}
</SCRIPT>