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This is in fact a scripting error. It doesn't have anything to do with |
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the scroll bar, though. I have my resolution at 1066x1200 which |
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provides ample room for the page to render and the scrollbar is never |
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invoked. |
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|
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At any rate, I have seen this error before with my own scripts. In |
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essence, this is what happens |
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|
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1. Mouse hovers over specified area and triggers onmouseover event |
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2. onmouseover event calls a function that places a new image at the |
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mouse cursor |
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3. The mouse cursor is now over the new image so onmouseout is |
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triggered from the original image |
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4. onmouseout removes the new image |
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5. The mouse cursor is now over the original image again, triggering |
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onmouseover |
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6. Go to step 2 |
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|
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This looping is what causes the flickering image. If you are the |
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developer of the page, I would suggest you look into one of these solutions: |
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|
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* When the new hovering image is created, its absolute position |
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should be such that it does not appear under the mouse cursor |
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* When the new hovering image receives focus, a variable is set and |
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unset when focus is lost. onmouseout on the original image should |
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check to see if this variable is set before removing the original |
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image |
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|
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If you are not the developer, feel free to forward this message to |
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whoever is. Hope this helps. |
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|
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Dustin C. Hatch |
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http://www.dchweb.com |
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|
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Harm Geerts wrote: |
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> On Monday 30 April 2007, Peter Humphrey wrote: |
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> |
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>> Quite often, when I'm viewing a Web page that uses Javascript to overlay a |
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>> picture with enlarged sections of itself, I find a very rapid flickering of |
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>> the overlaid section alternating with the background picture. Here's an |
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>> example: http://heritage.stsci.edu/2007/16/supplemental.html. Does anyone |
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>> else find this? About Firefox says: Mozilla/5.0 (X11; U; Linux x86_64; |
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>> en-GB; rv:1.8.1.3) Gecko/20070411 Firefox/2.0.0.3. |
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>> |
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> |
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> That's a scripting error, when you see the enlargement on mouseover the height |
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> of the page increases. The increase causes the loss of the mouseover event en |
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> then the page restores to it's original height. |
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> |
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> If you increase the size of the browserwindow/desktop so that the enlarged |
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> picture doesn't cause the page to scroll the javascript function works fine. |
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> |
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