Solved

Rollover JavaScript not working in Safari and Chrome

Posted on 2011-09-07
8
444 Views
Last Modified: 2012-05-12
I have a page that displays a thumbnail image when you roll over a link.


The JavaScript routines for rollove rand rollout are simply:

<script type="text/javascript" language="javascript">

function showImage(image) {
    image.style.visibility="visible";
}
   
function hideImage(image) {
    image.style.visibility="hidden";  
}
 </script>

And the HTML is:

<img id="sib_1_tn" class="thumb" src="images/Siblings/sib_1_tn.jpg" />
<a href="sib_1.php" onmouseover="showImage(sib_1_tn)" onmouseout="hideImage(sib_1_tn)">Sibling 1 </a>
 

=================

This works fine in IE and Firefox but neither Chrome nor Safari display the thumbnail image when you roll over the link.  Does anyone run an idea what the problem might be?

Thanks for any suggestions.

Steve
0
Comment
Question by:steva
  • 6
  • 2
8 Comments
 
LVL 82

Expert Comment

by:leakim971
ID: 36499984
put the ID of the image inside simple quote :

onmouseover="showImage('sib_1_tn')" onmouseout="hideImage('sib_1_tn')
0
 
LVL 82

Expert Comment

by:leakim971
ID: 36499995
<img id="sib_1_tn" class="thumb" src="images/Siblings/sib_1_tn.jpg" />
<a href="sib_1.php" onmouseover="showImage('sib_1_tn')" onmouseout="hideImage('sib_1_tn')">Sibling 1 </a>

Open in new window

0
 
LVL 82

Expert Comment

by:leakim971
ID: 36500030
an update to the function in this case : http://jsfiddle.net/QXJWn/

function showImage(image) {
    document.getElementById(image).style.visibility="visible"; 
}
    
function hideImage(image) {
    document.getElementById(image).style.visibility="hidden";  
}

Open in new window

0
 
LVL 82

Accepted Solution

by:
leakim971 earned 500 total points
ID: 36500036
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:steva
ID: 36500427
Thanks Leakim.  The basic problem was that I was just using the passed in ID to access the DOM element (image.style.visibility="visible")  instead of going through getElementById().  For some reason Firefox and IE let you get away with  this, but not Safari and Chrome.

Thanks.  I gave you the points.

Steve
0
 
LVL 82

Expert Comment

by:leakim971
ID: 36500462
Hi Steve,

What's up? Yes, you used shorcut references for your fields.
It's a good pratice to use :

document.getElementsByName("NAME_ATTRIBUTE")[0]
or :
document.getElementById("ID_ATTRIBUTE")

please note the << [0] >> on the first one and the << s >> after element
You can have multiple fields with the same name in a page ( [0] for the first one, [1] for the second and so on )

ID should/MUST be unique so there's no getElementsById

Thanks for the points
Best Regards
0
 

Author Comment

by:steva
ID: 36503053
Got it!  Thanks.

(I'm fine. When I'm not doing web pages for people  I'm working my "software" through  Microsoft's "Certified For" program to give it credibility.  I hope all is well with you.).
0
 
LVL 82

Expert Comment

by:leakim971
ID: 36505178
very nice, good luck, don't forget the fun
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction HTML checkboxes provide the perfect way for a web developer to receive client input when the client's options might be none, one or many.  But the PHP code for processing the checkboxes can be confusing at first.  What if a checkbox is…
JavaScript can be used in a browser to change parts of a webpage dynamically. It begins with the following pattern: If condition W is true, do thing X to target Y after event Z. Below are some tips and tricks to help you get started with JavaScript …
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now