可折叠Div的帮助（添加显示/隐藏状态的图像）

Question

I'm using this script for collapsible divs...

http://www.harrymaugans.com/2007/03/06/how-to-create-an-animated-sliding-collapsible-div-with-javascript-and-css/

Everything's working fine but I need to add an image for show/hide state. When the div is showing the header displays an "open" arrow...when closed it displays a "closed" arrow. Any help is really appreciated!! Thanks :)

Here's the JS...

var timerlen = 5;
var slideAniLen = 250;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function slidedown(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display != "none")
                return; // cannot slide down something that is already visible

        moving[objname] = true;
        dir[objname] = "down";
        startslide(objname);
}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display == "none")
                return; // cannot slide up something that is already hidden

        moving[objname] = true;
        dir[objname] = "up";
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

        endHeight[objname] = parseInt(obj[objname].style.height);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
        }

        obj[objname].style.display = "block";

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
                if(dir[objname] == "up")
                        d = endHeight[objname] - d;

                obj[objname].style.height = d + "%";
        }

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up")
                obj[objname].style.display = "none";

        obj[objname].style.height = endHeight[objname] + "%";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}

function toggleSlide(objname){
  if(document.getElementById(objname).style.display == "none"){
    // div is hidden, so let's slide down
    slidedown(objname);
  }else{
    // div is not hidden, so slide up
    slideup(objname);
  }
}

Answer 1

var button = document.getElementById('button_div_id)

function slidedown(objname){
button.style.background = 'image/path.jpg

put the same in your slideup, just set the path to the image you want.

or write a function like this...

function toggle_visibility() {
     var d = document.getElementById('slidedown');
     var u = document.getElementById('slideup');
     if(d.style.display == 'block') {
        d.style.display = 'none';
        u.style.display = 'block'
     }
     else {
        d.style.display = 'block';
        u.style.display = 'none';
     }
  }

and have each image div floated so that when one dissapears, the other will take it's place. you'll need to have the slideup set to

display: none;

and slidedown to

display: block;

and then if you put put the function in the onclick for the tag, it should do what you want it to. so...

<div id="slideup" onclick="toggle_visibility();">

Answer 2

Hey thanks for the reply. Can't get it to work..Here check out this site..picked out a random profile for example..I need it exactly like this! Thanks again

http://vkontakte.ru/id16334517

As you can see when you click one of the headers the arrow changes. Here's some of there code..

CSS..

.flexOpen .whenShut {
  display: none; }

.flexOpen .whenShut {
  display: none; }

.flexOpen .whenOpen {
  display: block; }

.flexShut .whenShut {
  display: block; }
.flexShut .whenOpen {
  display: none; }

.flexOpen {
padding-bottom: 5px;
}
/*  Headers  */
.flexNarrow {
  border-bottom: solid 1px #DAE2E8;
  cursor: pointer;
  height: 8px;
}
.bOpen .flexNarrow {
  background: url('../images/arrow_up.gif') no-repeat center #eee;
}
.bOpen :hover.flexNarrow {
  background: url('../images/arrow_up.gif') no-repeat center #DAE2E8;
}
.bShut .flexNarrow {
  background: url('../images/arrow_down.gif') no-repeat center #eee;
}
.bShut :hover.flexNarrow {
  background: url('../images/arrow_down.gif') no-repeat center #DAE2E8;
}

.bOpen .flexHeader {
  border-top: solid 1px #b1bdd6;
  background-repeat: no-repeat;
  background-image: url('../images/flex_arrow_open.gif');
  background-position: left center;
}

.bShut .flexHeader {
  background-color: #eee;
  border-top: solid 1px #ccc;
  background-repeat: no-repeat;
  background-image: url('../images/flex_arrow_shut.gif');
  background-position: left center;
}

.bShut .flexHeader h2{
  color: #888;
}

.bShut .flexHeader .flexEdit{
  display:none;
}

.bOpen .flexHeader span{
  display:none;
}

.flexHeader {
  cursor: pointer;
  padding: 3px 8px 3px 23px;
  border-top: solid 1px #b1bdd6;
  background: #DAE2E8;
  -khtml-user-select: none;
}

.flexHeader div {
  float: left;
}

.flexHeader .flexEdit {
  font-weight: bold;
  float: right;
}

.flexHeader .flexEdit a{
  color: #A9B8CB;
}


.flexHeader h2 {
  display: inline;
  color: #45688E; }

.whenOpen .flexHeader {
  border-top: solid 1px #45688E;
  background-repeat: no-repeat;
  background-image: url('../images/flex_arrow_open.gif');
  background-position: left center;
}

.whenShut .flexHeader {
  background-color: #eee;
  border-top: solid 1px #ccc;
  background-repeat: no-repeat;
  background-image: url('../images/flex_arrow_shut.gif');
  background-position: left center;
}

.whenShut .flexHeader h2{
  color: #888;
}
/* Content Box */

.flexBox {
  padding: 10px 8px 15px 8px;
}

.no_padding {
  padding: 0px;
}

.flexBox h4 {
  margin: 1px 0px 0px;
  padding: 4px 0px 2px;
  font-size: 11px;
  border: none;
}

Profile page code (header w/ hide/show section)...

<div id="personal" class="flexOpen">
   <div class="bOpen">
    <div class="flexHeader clearFix" onclick="return collapseBox('personal', this, 0.90, 0.50)" onfocus="blur()">
     <div>
      <h2>Information</h2>
     </div>
     <div class="flexEdit" style='display:none'>
      <a href="/editProfile.php?act=general" onclick="event.cancelBubble = true; " title="">edit </a>

     </div>
    </div>
   </div>
   <div class="c" >
    <div class="flexBox clearFix">

  <h4>Contact Information
  <div class="edit" style='display:none'><a href="/editProfile.php?act=contacts">[ edit  ]</a></div>
  </h4>

  <h4>Personal Information
  <div class="edit" style='display:none'><a href="/editProfile.php?act=personal">[ edit  ]</a></div>
  </h4>
  <table class="profileTable" cellpadding="0" cellspacing="0">

  <tr><td><div style="color:gray; margin:10px 0px 0px 120px">No information.</div></td></tr>
</table>

    </div>
   </div>
  </div>