onMouseOut?

[PCMOVER]

good afternoon forumers!
hope everyone is enjoying their thursday!
now to bidness...
I have constructed a DHTML web editor, and it is working fine using many of the the components from my own scripting and some of the MSHMTL COMs. Now, everything is working fine,... except within the editing content component, i have a bunch of div's that call javascript functions to do various things including save,... insert tables... whatever!
and they all work... but if i onClick a div,hold the button move off of the div and onMouseUp,I get an error message comes up saying:
A Runtime Error has occurred.
Line 395
Error: 'className' is null or not an object

now... am i right when i say the error is coming from the appropriate onMouseUp function not being sent anything and it is trying to set it to className??
I mean i don't have a className! SO WHAT IS IT???
Basicly some one is either going to know what i am talking about, or have some low level .js include experience with the DHTML editing component

i have listed the sdk for anyone that needs a "refresher":
http://msdn.microsoft.com/archive/de...dhtmledcom.asp

ANY input is appreciated
thanks a bunch

[Maelstrom]

As an experiment try and change the onclick to onmousedown. I assume you are trying to create a drag and drop affect or else you were just playing around and found the error ...

If you really want to learn a lot about advanced method handling, which is far more than I could explain in one message, try here

http://www.webreference.com/js/column74/

That article will lead you to other browsers involved in the event tree

[PCMOVER]

hey, thanks for replying maelstrom!

you are correct in saying that i found the error when i was doing something else,... the button that i discovered the bug on doesn't as of yet have fully functionality, and requires some procedure to make it work, and sometimes i get ahead of myself after editing code and click on it before a refresh.. when i do,.. sometimes i catch myself and i can drag the mouse off the div, and then release the click button
then i get that darn className error message!

thanks for the link tho! i use Doc Javascript articles all of the time, his recent set of SOAP articles are incredibly handy! When i find out where the null object is i will let ya know!

thanks again!

[Maelstrom]

No problem. I think it is because you onmouseover something it captures that element. When you onmouseout it has no element. To see what I mean try this

<table border=1>
	<tr>
		<td onmousedown="document.getElementById('test').innerHTML='mousedown'">testing onmousedown</td>
	</tr>
	<tr>
		<td onmouseup="document.getElementById('test').innerHTML='mouseup'">testing onmouseoff</td>
	</tr>
</table>
<div id="test">
</div>

If you simply click on the first row you will capture the onclick if you hold the mouse button down and move the mouse down to the second element and release you capture both events.

This is kind of why I think your problem is associated with how and when you are capturing your events. Or else you just found a bug in the javascript event system