My VBScript is not working in Chrome but works in IE

i have a bunch of code in vbscrpt.I need to work this in both IE and Chrome.I have less knwoledge in VB.How can i make this function work in Chrome as well as IE

 

Function Getdetails(Val1 , Val2)

Dim blnGetdetails

blnGetdetails = ((Val1 or Val2) = Val1)

If blnGetdetails = true Then

Getdetails= "True"

Else

Getdetails= "False"

End If

End Function