div - position - offsetParent

[Vittore Zen]

Hi,

a little question.

I have some nested tables with some divs (so default set is relative - ok?)

Now, i need to draw a line from one div to another. The problem is to
find the position of div

I use these functions:

function findPosX(obj)
{
var curleft = 0;
if (obj.offsetPare nt)
{
while (obj.offsetPare nt)
{
curleft += obj.offsetLeft
obj = obj.offsetParen t;
}
}
else if (obj.x)
curleft += obj.x;
return curleft;
}

function findPosY(obj)
{
var curtop = 0;
if (obj.offsetPare nt)
{
while (obj.offsetPare nt)
{
curtop += obj.offsetTop
obj = obj.offsetParen t;
}
}
else if (obj.y)
curtop += obj.y;
return curtop;
}



But these give an error on offsetParent. The browser (IE 6) says that is
null (or it isn't a object).

Any idea?

Thanks
v.

[Martin Honnen]

Re: div - position - offsetParent



Vittore Zen wrote:
[color=blue]
> I have some nested tables with some divs (so default set is relative - ok?)[/color]

What is "default set"?
[color=blue]
> Now, i need to draw a line from one div to another. The problem is to
> find the position of div
>
> I use these functions:
>
> function findPosX(obj)
> {
> var curleft = 0;
> if (obj.offsetPare nt)
> {
> while (obj.offsetPare nt)
> {
> curleft += obj.offsetLeft
> obj = obj.offsetParen t;
> }
> }[/color]

I would rather use
if (typeof obj.offsetLeft != 'undefined') {
do {
curleft += obj.offsetLeft;
obj = obj.offsetParen t;
}
while (obj)
}
[color=blue]
> But these give an error on offsetParent. The browser (IE 6) says that is
> null (or it isn't a object).[/color]

For which line? And what do you pass in as obj when you call the function?

--

Martin Honnen

http://JavaScript.FAQTs.com/