I was trying to subclass a Web Treeview control for my own evil purposes and ran into a sticky problem - scrollTo not working! Just for background, my evil purpose was to replace the Infragistics ultra web tree control, since we only use about 5% of the functionality, but pay the full price of upgrades and page size for the other 95%.

anyway, all was going well, until I tried to implement the ScrollTo functionality.

My first pass looked something like this:

[javascript]
<Script Type="text/javascript">
<!–
var ele = document.getElementById(nodeID);
window.scrollTo(ele.parentElement.offsetParent.offsetLeft ,ele.parentElement.offsetParent.offsetTop);
//–>
</Script>
[/javascript]

Now this worked great in my sample text page, but when I dropped it into the main application page, it didn’t do a damn thing. What gives?

Well, I traced the problem down to a style tag on the wrapping div tag:

[css]
OVERFLOW-Y: auto;
[/css]

It seems that the auto setting disallowed my scrolling to a specific x,y coordinate when that coordinate was outside the visible space.

That really stunk because I didn’t have the ability to modify the existing container page, beyond replacing the Infragistics control tag.

Luckily, I found a workaround:

[javascript]
<Script Type="text/javascript">
<!–
var ele = document.getElementById(nodeID);
ele.scrollIntoView();
//–>
</Script>
[/javascript]

Not only does this work within the CSS overflow directive, but it’s also a bit more elegant since I no longer have to worry about all that parent offset nonsense.

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