scrollTop & document/documentElement 2

[papageno]

In WXP IE6, I have a button call foo():

var frame = window.frames['fname'];
frame.window.scroll(0,300);

function foo () {
   if (frame.window.innerHeight) {
      pos = frame.window.pageYOffset
      alert('window '+pos)
   } else if (frame.document.documentElement
   && frame.document.documentElement.scrollTop) {
      pos = frame.document.documentElement.scrollTop
      alert('documentElement '+pos)
   } else if (frame.document.body) {
      pos = frame.document.body.scrollTop
      alert('document '+pos)
   }
   frame.window.scroll(0,pos);
}

Now the first time I push the button, the result is "document 0", next time(s) the result is the expected "documentElement 0".

So ... ? Am I dumb (probably) or what? =(

 

[BillyRayPreachersSon]

Not necessarily. It could well be that "scrollTop" is "0" the first time around, and not the second.

Hope this helps,
Dan



Coedit Limited - Delivering standards compliant, accessible web solutions

[tt]Dan's Page [blue]@[/blue] Code Couch

http://www.codecouch.com/dan/

[/tt]

 

[adam0101]

To expand on Dan's post, if scrollTop is zero, then this line.. "&& frame.document.documentElement.scrollTop" will implicitly convert to a boolean value of "false".


Adam

http://adameslinger.blogspot.com/

 

[papageno]

Oh, OK I get it. Thanks to you both.