Pop up alert

[strobie]

Hi, does anyone know how to make a alert pop up open for only certain browsers, using javascript...specifically IE 7 or older

[zaphod42]

I usually just do :

if(document.all){alert('your alert text here')}

but it depends on what browser specifically....if you just need it for ie in general, the above will work

[acoder]

IE is not the only browser which supports document.all.

OP: why do you need an alert for a specific browser? Perhaps if you explain your problem, we could suggest an alternative.

[strobie]

I designed a site and went overboard with transparent div tags, at the time I wasn't aware of IE (pre 7) limitations

here's the link
http://www.friendsofinstapstudycenter.net/INSTAP-NEW/

[acoder]

Instead of an alert, add a filter for IE to allow it to display transparent PNG images.

[strobie]

hmm gave the ie filter a shot. i noticed a slight size change with some images but wouldn't work for me.

[acoder]

Try using the IE7 library to bring IE5-6 up to date.

[strobie]

awesome it worked! one problem though. it works only when I have actual images living in a file,

eg.http://www.friendsofinstapstudycenter.net/INSTAP-NEW/TEST.html

but what do I do if the images are being called from div tags in my css stylsheet?

[acoder]

Could you give an example?

[zaphod42]

acoder....I'm just curious, I've only been developing js for about year, and I've tested my systems on ie 5-7 ff 2&3, and the newest safari....of those only the ie versions support document.all....what other browsers do?


ANSWER:::

after I posted this I went and looked around a bit like I should have done BEFORE I asked;)

Explorer 4+, Opera 6+, iCab, Ice, Omniweb 4.2-

ALL support document.all

[strobie]

acoder, you have been a great help. I renamed all my images to implement the IE -7 filter. Works great! My only question is, is it common for links to lose functionality if the are in a div that embeds transparent images that have been corrected by the applied java script filter, or did I do something incorrectly?

regards

[acoder]

That shouldn't happen. Does this affect all browsers or only IE6?

[strobie]

just 6.0, and 5.0 also

[acoder]

Is the page where you've made the changes the one you linked to earlier?

[strobie]

didn't want to overwrite the old so i had to change to
http://www.friendsofinstapstudycente...EW2/index.html
on the above url, my 'new book' hovers/links at the bottom are disabled

and here:
http://www.friendsofinstapstudycente...log/index.html
my side navigation is disabled... confusing