# Firefox vs. IE: ymouse reported differently

**URL:** https://forum.kirupa.com/t/firefox-vs-ie-ymouse-reported-differently/171895
**Category:** flash
**Created:** [December 9, 2005, 1:01am UTC](https://forum.kirupa.com/t/firefox-vs-ie-ymouse-reported-differently/171895 "2005-12-09T01:01:31Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![prumps](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/prumps/32/1995_2.png) [@prumps](https://forum.kirupa.com/u/prumps)
#### Post date: [December 9, 2005, 1:01am UTC](https://forum.kirupa.com/t/firefox-vs-ie-ymouse-reported-differently/171895/1 "2005-12-09T01:01:31Z")

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Hi,  
I’m having some problems with a flash movie. I have a large grid of  
photos (as movie clips) that are put on the stage dynamically. I’m  
trying to detect when the mouse is over one. The stage dimensions once  
the photos are added are 476 x 3752.

In Firefox 1.5 with Flash 8 Plugin, the \_ymouse position reported is  
way off as soon as you scroll to a location where you can’t see the top  
or bottom of the stage. It reports as if it’s near the very bottom of  
the stage even tho it is much closer to the top.

It works fine in IE.

Does anyone know of any reported differences in behaviour between  
browser plugins, and more importantly, a way around this problem? It  
messes up all my program logic.

function applyMouseOver(mcClip) {  
trace("\_root.xMouse=" + \_root.\_xmouse + " \_root.yMouse=" +  
\_root.\_ymouse);

}

Here’s a sample of what shows up in IE as i roll the mouse over each  
photo going down the page:  
2005-12-08 16:55:22 \_root.xMouse=59 \_root.yMouse=197  
2005-12-08 16:55:22 \_root.xMouse=57 \_root.yMouse=282  
2005-12-08 16:55:23 \_root.xMouse=47 \_root.yMouse=365  
2005-12-08 16:55:27 \_root.xMouse=24 \_root.yMouse=473.95  
\<!— This is where I have to scroll the browser down slightly to see  
the next movie clip —\>  
2005-12-08 16:55:30 \_root.xMouse=53 \_root.yMouse=533.95  
2005-12-08 16:55:33 \_root.xMouse=44 \_root.yMouse=616.95  
Here’s what shows up in Firefox:  
2005-12-08 16:57:23 \_root.xMouse=25 \_root.yMouse=57  
2005-12-08 16:57:25 \_root.xMouse=63 \_root.yMouse=116  
2005-12-08 16:57:26 \_root.xMouse=24 \_root.yMouse=226  
2005-12-08 16:57:26 \_root.xMouse=21 \_root.yMouse=296  
\<!— This is where I have to scroll the browser down slightly to see  
the next movie clip —\>  
2005-12-08 16:57:29 \_root.xMouse=21 \_root.yMouse=3518.8  
2005-12-08 16:57:31 \_root.xMouse=52 \_root.yMouse=3556.8  
2005-12-08 16:57:32 \_root.xMouse=51 \_root.yMouse=3640.8

Thanks for any insight you may have.

Paul