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Switch image on expanded content.


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Hey guys, Im creating a javascript content expander and would like to know how to create it so it changed the image from an down arrows to open the box, and a down arrow to close the box.

 

Here is my current code.

 

<script type="text/javascript">
//var persistmenu="yes"
var persisttype="sitewide" 

if (document.getElementById){
document.write('<style type="text/css">\n')
document.write('.submenu{display: none;}\n')
document.write('</style>\n')
}

function SwitchMenu(obj){
    if(document.getElementById){
    var el = document.getElementById(obj);
    var ar = document.getElementById("masterdiv").getElementsByTagName("span"); 
        if(el.style.display != "block"){ 
            for (var i=0; i<ar.length; i++){
                if (ar[i].className=="submenu")
                ar[i].style.display = "none";
            }
            el.style.display = "block";
        }else{
            el.style.display = "none";
        }
    }
}

function get_cookie(Name) { 
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { 
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}

function onloadfunction(){
if (persistmenu=="yes"){
var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
var cookievalue=get_cookie(cookiename)
if (cookievalue!="")
document.getElementById(cookievalue).style.display="block"
}
}
function savemenustate(){
var inc=1, blockid=""
while (document.getElementById("sub"+inc)){
if (document.getElementById("sub"+inc).style.display=="block"){
blockid="sub"+inc
break
}
inc++
}
var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
var cookievalue=(persisttype=="sitewide")? blockid+";path=/" : blockid
document.cookie=cookiename+"="+cookievalue
}


if (window.addEventListener)
window.addEventListener("load", onloadfunction, false)
else if (window.attachEvent)
window.attachEvent("onload", onloadfunction)
else if (document.getElementById)
window.onload=onloadfunction

if (persistmenu=="yes" && document.getElementById)
window.onunload=savemenustate
</script>

<style type="text/css">
.sectionHeadernews .plaquenews {
background: url(../layout/section_header_plaque_medium.png) center no-repeat;
}

.sectionHeadernews .plaquenews, .sectionHeaderchat .plaque_medium, .sectionHeaderchat .plaque_large {
height: 26px;
text-align:center
overflow: hidden;
line-height: 25px;
font-size: 14px;
font-family: Palatino Linotype, Book Antiqua, Palatino, Times New Roman, Times, serif;
font-weight: bold;
font-variant: small-caps;
color: #30291f;
}

.sectionHeadernews {
background: #bd9c5a url(../layout/section_header_bg.png) top repeat-x;
width: 754px;
}

.sectionHeadernews .leftnews {
background: url(../layout/section_header_left_news.png) left no-repeat;
}

.sectionHeadernews .rightnews {
background: url(../layout/section_header_right_news.png)  right no-repeat;
}
</style>


<div class="sectionHeadernews">
<div class="leftnews">
<div class="rightnews" onclick="SwitchMenu('sub1')" >
<div class="plaquenews">
Click to view current website news
</div>
</div>
</div>
</div>

 

I want the <div class="rightnews"> thing to change from an up arrow to a down arrow.

 

Here are the icons im using.

For the box to contract: 7NYrr.png

 

for the box to expand. p2Bou.png

 

If someone could help me out by adding the code so the images switch would be great!

Link to comment
https://forums.phpfreaks.com/topic/230490-switch-image-on-expanded-content/
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