The gk_creativity Image Show style allows you to specify different button texts for each slide.
To achieve this effect you have to use the following syntax in the Url field:
If the Url field doesn't contain your custom text, then the default text form the language file is used.
In the above example we have used the following settings
Title: First slide1111
Text: For each slide you can set different link text
Title: Second slide
Text: This slide have different link text
Url: [Different link]#gkHeader