help me to correct it, please!

[liwei]

<script language="JavaScript">

function scrollup() {
var H = Document.Frames(0).Document.All.H;
if (H.value == "1")
{
H.value = "0";
scroll(0,0);
}
}
</script>

H is from an iframe.

The problem is :

Document undefined

[RonPK]

Try lower case for document, frames, all:

var H = document.frames(0).document.all.H;

[liwei]

Thank you RonPK!
It's working well with lower case.
Finally, the problem was solved.

[gph]

Hi liwei, glad to see you have this working.

How did you get it to work?