$(window).height(): Firefox "loading-bar" in footer blocks 17px

I use jquery $(window).height() to get the height of th开发者_开发百科e viewport. But the result is 17px smaller than expected. It seems the litte "loading-bar" with the infomation about the site (at the bottom left side) blocks the "last 17px" in Firefox 5 and also in Safari. So the height of the viewport ist smaller than it really is.

I'm using Jquery 1.6.2

Anybody see the same issue?

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I just figuered out, that my Image hasn't got a width and height, so with js turned off, there shows up a scroll bar at the bottom, which is as high as the information/status bar of the browser. Because I read the height/width on domready, the window.height() just get the size of the viewport as it is without JS and there "it" finds a scrollbar at the bottom.

Now I fixed it, by giving the element a width and height, that causes the scrollbar , so there is nolonger a scrollbar. After that, the window.height() shows the right and expected size.

thx for help, and what ive learned? understand the Domready, and sometimes i have to turn of JS to get rid of errors, that seems to be caused by JS, but aren't.

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That's not an "issue". The information bar takes up space, therefore the $(window).height() is logically going to be a certain number of pixels smaller than if the bar were hidden.