Pre-Checking Valid Sheet Names In Hyperlink

I have the following macro, which is assigned to ctrl+shift+h to allow users to make a list and to insert hyperlinks to other sheets that have more details than the list can show:

Code:
Sub linker()
Dim strDocument As String
Dim strSheet As String
Dim strAddress As String
Dim strLink As String

[Code] .......

I was surprised to see that even if the contents of the active cell is not a valid sheet name in the target document, the link is still inserted without error. If the link is subsequently clicked, the target document will open and an "invalid reference" error box will appear.

Is there any way to check whether the contents of the cell constitutes a valid sheet name in the target workbook at the point at which the hyperlink is created, without opening up the target document?