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Changing source attribute dynamically for embedded <IMG> tags.

Posted on 2001-06-19
9
Medium Priority
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198 Views
Last Modified: 2013-11-19
I have the following HTML code :

<BODY>

     <DIV Id="whoarewe" style="HEIGHT: 21px; LEFT: 5px; POSITION: absolute; TOP: 18px;

VISIBILITY: visible; WIDTH: 32px; Z-INDEX: 1">
       <IMG border="0" Name="whoarewe" src="static-ball2.gif">
     </DIV>
     
     
  <DIV Id="whoarewe2" Style="position:absolute; top: 16px; left: 42px; visible: visible;

z-index:1">
    <A Href="Whoarewe.htm" Target="main-frame"><IMG Name="whoarewe2" Src="swhoarewe2.gif"

Border="0" Valign="top"></A>
  </DIV>
     
     
<div id="portfolio" style="HEIGHT: 21px; LEFT: 5px; POSITION: absolute; TOP: 60px; VISIBILITY:

visible; WIDTH: 32px; Z-INDEX: 1">
       <IMG border="0" Name="portfolio" src="static-ball2.gif" >
</div>

  <DIV Id="portfolio2" Style="position:absolute; top: 59px; left: 40px; visibility: visible;

z-index:1">
    <A Href="portfolio.htm"  Target="main-frame">    
    <IMG Name="portfolio2" Src="sportfolio2.gif" Border="0" Valign="top"></A>
  </DIV>
       
     
<DIV id="core-competence" style="HEIGHT: 21px; LEFT: 5px; POSITION: absolute; TOP: 117px;

VISIBILITY: visible; WIDTH: 32px; Z-INDEX: 1">
       <IMG border="0" Name="core-competence" src="static-ball2.gif">
</DIV>
     
     <DIV Id="core-competence2" Style="position:absolute; top: 117px; left: 40px; visibility:

visible; z-index:1">
          <A Href="core-competence.htm" Target="main-frame"><IMG Name="core-competence2"

Src="score-competence2.gif" Border="0" Valign="top"></A>
     </DIV>

</BODY>    
     I want to write an onClick function for each of the anchor tags such that the src of the image embedded within the link that is currently  clicked is changed to "spinning-ball.gif" and the image-source of the last clicked link changes back to the original.

Example : If clicked Link A
            Link A : Image-source = spinning-ball.gif AND
          END IF
          IF clicked Link B
            Link A : Image-sorce = changes back to static-ball.gif AND
            Link B : Image-source = spinning-ball.gif
          END IF
 
0
Comment
Question by:x666xchange
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9 Comments
 
LVL 9

Expert Comment

by:nimaig
ID: 6206348
Try this, quite close to what you want :

<html>
<head>
<script language="javascript">
var imgObj = null;
var openImg = new Image();
openImg.src="open.gif";
var closeImg = new Image();
closeImg.src="close.gif";

function changeImage(imgName){
     var newImgObj = document.images[imgName];
     if(newImgObj){
          if(imgObj) {
               if(imgObj != newImgObj){
                    imgObj.src = closeImg.src;
                    newImgObj.src= openImg.src;
               }
          }else{
               newImgObj.src= openImg.src;      
          }
     }
     imgObj = newImgObj;      
}
</script>
</head>
<body>
<img src="close.gif" name="position_id1"> <a href="javascript:void(0)" target="" onClick="changeImage('position_id1')">link 1</a>

<img src="close.gif" name="position_id2"> <a href="javascript:void(0)" target="" onClick="changeImage('position_id2')">link 2</a>

<img src="close.gif" name="position_id3"> <a href="javascript:void(0)" target="" onClick="changeImage('position_id3')">link 3</a>
</body>
</html>
0
 
LVL 12

Expert Comment

by:ahosang
ID: 6206620
Put this script in the head:

<script>
var activeOriginal="";
var active="";
function changeImgs(newImgName) {
  if (active) {
     active.src=activeOriginal;
  }
  if (document.all) {
    active=document.images[newImgName];
     activeOriginal=active.src;
    active.src="button.gif";
     return true
  }
  if (document.layers) {
    active=document.layers[newImgName].document.images[newImgName];
  }
  if (document.getElementById) {
    active=document.images[newImgName];
  }
  activeOriginal=active.src;
  active.src="button.gif";
  return true;
}
</script>

And in the links, put onclick="changeImgs('whoarewe2')" and so on for each link.
0
 
LVL 12

Expert Comment

by:ahosang
ID: 6206650
where I have put active.src="button.gif" that should be:
active.src="spinning-ball.gif";
0
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LVL 12

Expert Comment

by:ahosang
ID: 6209809
Of course this could be shorter still:
<script>
var activeOriginal="";
var active="";
function changeImgs(newImgName) {
 if (active) {
    active.src=activeOriginal;
 }
 if (document.all||document.getElementById) {
   active=document.images[newImgName];
 }
 if (document.layers) {
   active=document.layers[newImgName].document.images[newImgName];
 }
 activeOriginal=active.src;
 active.src="button.gif";
 return true;
}
</script>
0
 

Expert Comment

by:hjainu
ID: 6209894
<html>
<head>
<script language="javascript">
var count=0,c

function nothing()
{}

function abc(c)
{
if(c==1)
s1.src="still4.jpg"

if(c==2)
s2.src="still4.jpg"

if(c==3)
s3.src="still4.jpg"

if(count!=0)
{
if(count==1)
s1.src="still1.jpg"

if(count==2)
s2.src="still2.jpg"

if(count==3)
s3.src="still3.jpg"
}
count=c
}
</script>
</head>
<body>
 <a href="javascript:nothing()">
<img  id="s1" src="still1.jpg" onclick=abc(1) >
<a href="javascript:nothing()">
 <img id="s2" src="still2.jpg" onclick=abc(2)></a>
<a href="javascript:nothing()">
<img id="s3" src="still3.jpg" onclick=abc(3)></a>
</body>
</html>

Replace the still1,still2,still3 by the names of your image
still4 is the image that you want to have spinning-ball.gif in this case and any url in your anchor tag

0
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 6213278
May I please ask why you have your images in divs and absolutely positioned???
Makes it very hard to swap in all other browsers than IE...
Can't they just be in a table or even not in a table?


<BODY>
<IMG border="0" Name="whoarewe" vspace=5 hspace=5 src="static-ball2.gif"><A
Href="Whoarewe.htm" Target="main-frame"><IMG Name="whoarewe2" vspace=5 hspace=5
Src="swhoarewe2.gif" Border="0" Valign="top"></A><br>
<IMG border="0" Name="portfolio" vspace=5 hspace=5 src="static-ball2.gif" ><A
Href="portfolio.htm"  Target="main-frame"><IMG Name="portfolio2" vspace=5 hspace=5
Src="sportfolio2.gif" Border="0" Valign="top"></A><br>
<IMG border="0" Name="core-competence" vspace=5 hspace=5 src="static-ball2.gif"><A
Href="core-competence.htm" Target="main-frame"><IMG Name="core-competence2"
Src="score-competence2.gif" vspace=5 hspace=5 Border="0" Valign="top"></A>
</BODY>    
0
 

Author Comment

by:x666xchange
ID: 6215589
Dear mplungjan,

So that I can arrange them in teh shape of an arc along the left border of the browser.
0
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 6215832
Aha...
And Ahosang's code does not do the trick??

Michel
0
 
LVL 12

Accepted Solution

by:
ahosang earned 200 total points
ID: 6220555
yes this code does the trick:
<script>
var activeOriginal="";
var active="";
function changeImgs(newImgName) {
if (active) {
   active.src=activeOriginal;
}
if (document.all||document.getElementById) {
  active=document.images[newImgName];
}
if (document.layers) {
  active=document.layers[newImgName].document.images[newImgName];
}
activeOriginal=active.src;
active.src="spinning-ball.gif";
return true;
}
</script>

and in each link do like:
<A Href="Whoarewe.htm" Target="main-frame" onclick="changeImgs('whoarewe2')"><IMG Name="whoarewe2" Src="swhoarewe2.gif" Border="0" Valign="top"></A>

The parameter passed to the changeImgs function is the same as the name given to the div and image elements.
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