<html><body><input type="checkbox" id="myCheckBox" value="checkbox" checked>Indeterminate = true.<input type="button" value="Checkbox state" onClick="function1();"><script language="JavaScript">document.all.myCheckBox.indeterminate = true;function function1() { var m = document.all.myCheckBox.indeterminate; alert("Indeterminate: "+m); } </script></body></html>
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