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Working in IE but not work in firefox

Posted on 2006-06-21
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Last Modified: 2012-05-05
Hi Expert!
I have code lines:
<body bottomMargin="0" leftMargin="0" topMargin="0" rightMargin="0" onunload = "if (screenTop > 9999) DeleteUserOnline();" >
it's working in IE but not work in firefox, why? Help me
My requirement when user click the "X" to close browser(IE, Firefox) onunload event appear to call javascript funtion . Please help me.
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Question by:duynnh
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Expert Comment

by:Zvonko
ID: 16956692
The upper if condition is already a dirty trick working in IE only because of programmatic misbehavior. You cannot expect a bug from IE to work also in FF.
There is no way to detect window closing in browser.
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Expert Comment

by:third
ID: 16956743
i agree with Zvonko. you can only do this with IE.
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third earned 500 total points
ID: 16956791
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Author Comment

by:duynnh
ID: 16956965
But with code lines i run in IE as well.(I'm using Ajax .NET Pro).
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