invisible button

[liunx]

I want to add a button to a page that will be visible only if certain conditions are met.<br />
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Alternatively, a link that would be visible only if certain condidtions are met.<br />
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How would I do that.<br />
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Russ<!--content-->for any item on a page,use the style attribute with the following value<br />
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style="visibility:visible"<br />
style="visibility:hidden"<br />
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Cheers<br />
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Khalid<!--content-->thank you.<br />
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I was looking at layers to provide that function but I really didn't want to go there.<br />
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I will now try to figure out the trigger mechanism.<br />
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Will likely be back <br />
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Russ<!--content-->back.<br />
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your advice works if I hard code the style statement in. But I can't figure out how to get the correct value to the style= statement.<br />
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small function which determines if a value is null or not. if false visibility:visible. selection of button should take user to new page.<br />
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How do I return the value of my function to the style = statement?<!--content-->