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JS 01-10-2007 11:50 PM

layer switching
 
Hi all,
Im having some troubles with layers on a site im developing.
I have two layers one has an image of an artists palette on it and each blob
of paint is a link to a page on the site. That uses an image map and hrefs.

The second layer is where the page will appear. So when a user clicks a link
on the palette image, a new 'window' will appear over the palette to show
the content. The image of the palette will be slightly faded out to
highlight the content.

The trouble I'm having is switching between the layers when a link is
clicked. The image map links dont seem to show the content window or even be
clickable.

Im not sure if Im going about this the right way though because I also need
to be able to close the content window to show the menu again. If anyone has
any ideas on how to achieve this or any pointers then I would be happy to
know them coz I'm stumped.

The code for the page so far is below and the I know this code may seem a
bit of a mess but I've
been trying everything so its a little un-organised. I've used the z-Index
and visibility alone and together and no sucess so far.

If you need any further info then let me know.
Thanks in advance for your help
James
Scroll down for the code

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Document 1</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link rel="stylesheet" type="text/css" href="main.css"/ >
<script language="javascript" type="text/javascript">
function openwindow(elm)
{
window.document.getElementById("content").style.vi sibility="hidden";
window.document.getElementById("content").style.zI ndex = "0";
window.document.getElementById("palette").style.vi sibility="hidden";
window.document.getElementById("palette").style.zI ndex = "0";
window.document.getElementById(elm).style.visibili ty="visible";
window.document.getElementById(elm).style.zIndex = "100";
}
</script>
</head>

<body topmargin="0" marginwidth="0" marginheight="0"
onLoad="javascript:openwindow('palette')">

<table width="579" height="582" border="0" cellpadding="0" cellspacing="0">
<tr>
<td>
<div id="palette" class="palette" name="palette" style="visibility:
hidden; z-Index: 0">
<img src="images/backgroundpalette.png" border="0"
usemap="#paletteMap" start="fileopen" target="#frame">
</div>
<div name="content" id="content" class="content" style="visibility:
hidden; z-Index: 0">
<iframe src="home.htm" frameborder="0" width="579" height="582"
allowtransparency="true"/>
</div>

</td>
</tr>
</table>
<map name="paletteMap" id="paletteMap">
<area shape="circle" coords="478,177,46" href="home.htm" target="#frame"
alt="Homepage" onClick="javascript:openwindow('content')">
<area shape="circle" coords="183,281,50" href="gallery.htm"
target="#frame" alt="Gallery" onClick="javascript:openwindow('content')">
<area shape="circle" coords="311,489,49" href="links.htm" target="#frame"
alt="Links" onClick="javascript:openwindow('content')">
<area shape="circle" coords="323,160,50" href="about.htm" target="#frame"
alt="About Me" onClick="javascript:openwindow('content'))">
<area shape="circle" coords="150,389,49" href="events.htm" target="#frame"
alt="Events" onClick="javascript:openwindow('content')">
<area shape="circle" coords="184,502,56" href="contact.htm"
target="#frame" alt="Contact Me" onClick="javascript:openwindow('content')">
</map>
</body>
</html>




Ed Seedhouse 01-11-2007 12:51 AM

Re: layer switching
 
On Wed, 10 Jan 2007 23:50:55 GMT, "JS" <james.sarjeant90@ntlworld.com>
wrote:

>Hi all,
>Im having some troubles with layers on a site im developing.


Why are you posting to alt.html There is no concept of "layers" in html
or even in CSS. So this is not the appropriate group to be posting in.
Since you seem to be using javascript to create the effect you seem to
be wanting perhaps you should post in a javascript group.

It does strike me as odd that you would want to make your page unusable
to a good percentage of your visitors who won't have javascript enabled.


Adrienne Boswell 01-11-2007 03:59 AM

Re: layer switching
 
Gazing into my crystal ball I observed Ed Seedhouse <eseedhouse@shaw.ca>
writing in news:b52bq2trh8n2o0vtlfa9s2d7p9orv276fs@4ax.com:

> On Wed, 10 Jan 2007 23:50:55 GMT, "JS" <james.sarjeant90@ntlworld.com>
> wrote:
>
>>Hi all,
>>Im having some troubles with layers on a site im developing.

>
> Why are you posting to alt.html There is no concept of "layers" in

html
> or even in CSS. So this is not the appropriate group to be posting

in.
> Since you seem to be using javascript to create the effect you seem to
> be wanting perhaps you should post in a javascript group.
>
> It does strike me as odd that you would want to make your page

unusable
> to a good percentage of your visitors who won't have javascript

enabled.
>
>


Right - Evite does some very nasty Ajax that makes filling out a form
impossible. You have to CLICK on the form element to make it active,
and if you hit tab you are foobar and have to start from scratch.

--
Adrienne Boswell at Home
Arbpen Web Site Design Services
http://www.cavalcade-of-coding.info
Please respond to the group so others can share


the red dot 01-12-2007 02:10 AM

Re: layer switching
 

"Ed Seedhouse" <eseedhouse@shaw.ca> wrote in message
news:b52bq2trh8n2o0vtlfa9s2d7p9orv276fs@4ax.com...
> On Wed, 10 Jan 2007 23:50:55 GMT, "JS" <james.sarjeant90@ntlworld.com>
> wrote:
>
> >Hi all,
> >Im having some troubles with layers on a site im developing.

>
> Why are you posting to alt.html There is no concept of "layers" in html
> or even in CSS. So this is not the appropriate group to be posting in.
> Since you seem to be using javascript to create the effect you seem to
> be wanting perhaps you should post in a javascript group.
>
> It does strike me as odd that you would want to make your page unusable
> to a good percentage of your visitors who won't have javascript enabled.
>


just to be an old so and so - what percentage of visitors have javascript
disabled?



Beauregard T. Shagnasty 01-12-2007 04:43 AM

Re: layer switching
 
the red dot wrote:

> just to be an old so and so - what percentage of visitors have javascript
> disabled?


Hard to say... 10%? Scroll down:
<http://www.w3schools.com/browsers/browsers_stats.asp>

Relying on JavaScript is like turning off your web server for nearly a
month each year.

--
-bts
-Motorcycles defy gravity; cars just suck

Neredbojias 01-13-2007 06:33 AM

Re: layer switching
 
To further the education of mankind, "Beauregard T. Shagnasty"
<a.nony.mous@example.invalid> vouchsafed:

> the red dot wrote:
>
>> just to be an old so and so - what percentage of visitors have
>> javascript disabled?

>
> Hard to say... 10%? Scroll down:
> <http://www.w3schools.com/browsers/browsers_stats.asp>
>
> Relying on JavaScript is like turning off your web server for nearly a
> month each year.


And not using javascript is equivalent to crippling many very useful
functions otherwise available.

"Relying" is the keyword here. If the page doesn't work correctly with
javascript disabled, it either shouldn't work at all or should present a
simplified substitute version to the non-j/s user.

--
Neredbojias
Infinity has its limits.


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