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CSS for images to resize with page

I'm having trouble getting pics in a Joomla slideshow to resize correctly. The slideshow is part of a Yootheme Joomla template, one called Infinity. But it's not a default part of the template; rather, it's an add-on that Yootheme doesn't fully support -- they should, but they don't.

The pictures are in a WidgetKit slideshow.

The pics display correctly, but when the browser page is made wider, the pic resizing lags behind that of the rest of the page by a half second or more. When the page is made narrower, there are often display problems as well.

Here's a test version of my site. The slideshow is right on the home page.

This is the html and css that cause the pics to display:

<div class="frontpage-teaser1"><img src="images/widgetkit/slideshow/blank-459x1200.png" alt="blank" width="1200" height="459" border="0" />
</div>
<div class="frontpage-teaser2"><img src="images/widgetkit/slideshow/blank-459x1200.png" alt="blank" width="1200" height="459" border="0" />
</div>

.frontpage-teaser1 {
	background-image: url(../../../images/widgetkit/slideshow/map5.jpg);
	background-position: 0 50%;
	background-repeat: no-repeat;
	background-size: cover;
}
.frontpage-teaser2 {
	background-image: url(../../../images/widgetkit/slideshow/students-on-grass.jpg);
	background-position: 0 50%;
	background-repeat: no-repeat;
	background-size: cover;
}

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I know it can be done, because other sites that use the same template have gotten it to work. Here are three of them:

I'd be grateful if someone could compare my site to the ones that are resizing the images correctly and tell me what css I need to add or change to fix the problem.

Thank you!

Regards,
Jon
0
Jonathan Greenberg
Asked:
Jonathan Greenberg
  • 3
1 Solution
 
GaryCommented:
I'm guessing some kind of conflict - two functions trying to do the resize maybe. As the only difference I can see between the sites is your use of multiple js plugins.
Can you try disabling some of them?
0
 
Jonathan GreenbergAuthor Commented:
Thanks, Gary.  But I'm not sure what you mean, which is maybe to say that I'm not sure what a javascript plugin is.  Is jQuery a javascript plugin?  If so, are you referring to multiple versions of jQuery?  Or are there other "js plugins" that your seeing that I should try disabling?
0
 
Jonathan GreenbergAuthor Commented:
I need to correct something in my question.  Of the three sites I listed that use the same template as mine, only one is useful for comparison because the other two are WordPress, not Joomla.

The Joomla site that gets the images to display correctly is:
Sorry about the mistake!
0
 
Jonathan GreenbergAuthor Commented:
Thank you, Gary, you were correct.  I found and eliminated a couple of JavaScript plugin conflicts, and the display of the slides is now much improved.
0
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