Question

MM_preloadImages replace with CSS, Python, or PHP

Asked by: adamshields

I know this may hurt some of your eyes but I've recently been asked to address a site using MM_preloadImages and the other Dreamweaver javascript. I would like to migrate this to CSS, PHP, or even Python if possible.

There are three states, standard, mouse over, and then highlighted for the page that is currently active. All of the states currently use images so I would like to be able to use 'ALT' tags or just change them to plain text links but with the three states and a similar mouseover area like the current links use.

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript" type="text/JavaScript">
<!--
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
 
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
 
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}
 
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
</script>
<link rel="shortcut icon" href="favicon.ico" />
<link rel="icon" href="favicon.ico" />
</head>
 
<body bgcolor="#3C454C" text="#FFFFFF" link="#CCCC99" vlink="#CCCC99" alink="#CCCC99" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" onLoad="MM_preloadImages('images/images/new_nav_over_01.gif','images/images/new_nav_over_02.gif','images/images/new_nav_over_03.gif','images/images/new_nav_over_04.gif','images/images/new_nav_over_06.gif','images/images/new_nav_over_07.gif')">
<a name="top"></a> 
<table width="800" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td align="left" valign="top"> 
      <table width="642" border="0" cellspacing="0" cellpadding="0">
        <tr> 
          <td colspan="2"><a href="index.php"><img src="images/01.gif" width="801" height="100" border="0"></a></td>
        </tr>
        <tr> 
          <td colspan="2"><img src="images/image.gif" width="801" height="271"></td>
        </tr>
        <tr>
          <td align="left" valign="top"> <table width="505" height="31" border="0" align="left" cellpadding="0" cellspacing="0">
              <tr> 
                <td width="44" height="31"><a href="index.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image4','','images/images/new_nav_over_01.gif',1)"><img src="images/images/new_nav_up_01.gif" name="Image4" width="44" height="31" border="0"></a></td>
                <td width="75"><a href="valuations.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image5','','images/images/new_nav_over_02.gif',1)"><img src="images/images/new_nav_up_02.gif" name="Image5" width="75" height="31" border="0"></a></td>
                <td width="38"><a href="bios.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image6','','images/images/new_nav_over_03.gif',1)"><img src="images/images/new_nav_up_03.gif" name="Image6" width="38" height="31" border="0"></a></td>
                <td width="68"><a href="taxcases.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image7','','images/images/new_nav_over_04.gif',1)"><img src="images/images/new_nav_up_04.gif" name="Image7" width="68" height="31" border="0"></a></td>
                <td width="99"><img src="images/images/new_nav_on_05.gif" width="99" height="31"></td>
                <td width="116"><a href="litigation.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image9','','images/images/new_nav_over_06.gif',1)"><img src="images/images/new_nav_up_06.gif" name="Image9" width="116" height="31" border="0"></a></td>
                <td width="65"><a href="contacts.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image10','','images/images/new_nav_over_07.gif',1)"><img src="images/images/new_nav_up_07.gif" name="Image10" width="65" height="31" border="0"></a></td>
              </tr>
            </table></td>
          <td width="137" rowspan="2" valign="top" background="images/right_bg.gif"><img src="images/quote.gif" width="296" height="505"> 
          </td>
        </tr>
        <tr> 
          <td align="left" valign="top" background="images/smk_11.gif"><table width="504" border="0" cellspacing="20" cellpadding="0">
              <tr> 
  </tr>
</table>
</body>
</html>
                                  
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
54:
55:
56:
57:
58:
59:
60:
61:
62:
63:
64:
65:
66:
67:

Select allOpen in new window

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2008-03-11 at 15:14:47ID23233474
Tags

MM_preloadImages

Topics

Cascading Style Sheets (CSS)

,

Python Scripting Language

,

PHP Scripting Language

Participating Experts
2
Points
500
Comments
13

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. Python Printing
    I would like to print HTML pages on a printer.but the problem is that it should be printed as A4 size pages and if the content exceeds A4 size it should be moved to next page.Since I am using python kindly help me out on this
  2. Python versus PHP?
    Just a need to know sort of question, really. I am very proficient in PHP/MySQL programming and am all too happy with PHP, but my questions are these; 1) Is Python as good or better than PHP as a language? 2) How secure is it? 3) How well can it tie into MySQL? 4) How about...

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: nplibPosted on 2008-03-11 at 16:22:37ID: 21101454

I don't know python, but what your asking is impossible.

CSS is for redering HTML

PHP is a server side scripting language

and the reason that javascript works the way it does, is because it will load all the images before the body of the website loads, then load the images.

 

by: rowejdPosted on 2008-03-11 at 16:43:20ID: 21101591

nplib is right and way ahead of me on these types of issues (see his shield ;-)...but...if what you're after isn't necessarily just pre-loading script, but a mouse-over function with your links, that is indeed possible with CSS.

For example, let's say you have an image called "homepage_image.jpg" and when you scroll over it you want it to show "homepage_image_over.jpg" because it's an image link to your homepage.  Then you could use CSS.  Depending on your image, where it is located, etc...here's just a possible example:

This would go in your external or doc-level style sheet:

.homelink a:link, .homelink a:visited, .homelink a:active {
      background: url('/images/homepage_image.jpg');
      width:200px; /* or whatever */
      height: 200px; /* or whatever */
}

.homelink a:hover{
      background: url(/images/homepage_image_over.jpg);
      width:200px;
      height:200px;
}

Then when you want to show your link:

<a href="home.html" class="homelink">&nbsp;</a>

If that's the kind of thing you're after -- the mouseover functionality--it can be done with CSS.  But like nplib says -- the preloading function you can't do with PHP or CSS.

 

by: adamshieldsPosted on 2008-03-11 at 17:16:21ID: 21101841

Hmmm, maybe I didn't necessarily mean 'preload' then. I mean I would like the same functionality that the javascript above provides meaning have links with the three different states similar to http://wellstyled.com/css-nopreload-rollovers.html or what this person has done with their site http://www.patricktaylor.com/.

 

by: nplibPosted on 2008-03-11 at 17:18:54ID: 21101860

That would be CSS and rightfully described by rowejd.

But why change something that already works?

 

by: rowejdPosted on 2008-03-11 at 17:20:46ID: 21101871

Yes exactly.  You could actually copy their code from that page and just tweak it to work for you:

(I copied and attached the portion you'd need).  They did what I suggested, but wrapped everything in a div with an ID...which for their setup is perfect.

The CSS styles for the states you're referring to are:

a:link (the normal look when user's not doing anything to the link)
a:hover (the image that shows up when hovering over the link)
a:active (active state)
And a fourth state if you wish:
a:visited (the way it looks if you've already been there--not often used for image links though).

So just use the code below, change it around to match your setup, use the a:active if you wish, and voila.

<style type="text/css">
 
	#menu a {
		display:block;
		width:120px;
		margin: 1em 0; padding:7px 0 10px 20px;
		font: bold 14px/1 sans-serif;
		color:#c60;
		background: url("button.gif") 0 0 no-repeat;
		text-decoration: none;
		}
	#menu a:hover {	
		background-position: -157px 0;
		color: #E9BE75;
		}
	#menu a:active {
		background-position: -314px 0;
		color:white;
		}
	
</style>
 
</head>
<body>
 
<div id="menu">
	<a href="">Menu item 1</a>
 
	<a href="">Item no. 2</a>
	<a href="">Another (3)</a>
	<a href="">Menu item 4</a>
	<a href="">One more (5)</a>
</div>

                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:

Select allOpen in new window

 

by: adamshieldsPosted on 2008-03-11 at 17:26:10ID: 21101904

How do the links/buttons whatever know what state to be active in? When I pull up a page how does a specific link know to be highlighted. So if I'm on info.htm, how will the 'Info' button know to be highlighted?

 

by: rowejdPosted on 2008-03-11 at 17:48:21ID: 21102070

I see whatcha mean here.  a:active is not greatly supported across the board and doesn't exactly work the way you're thinking.  Because once you switch pages, it's no longer the active element on the page...know what I mean?  The way I accomplish what you're saying (if you want the active link to show up in a different color to show "you are here") -- is to define a custom style.  Let's stick with your example from the page you sent and tweak it a bit: (assuming your user is now on Item no 2's page:

<style type="text/css">
 
	#menu a {
		display:block;
		width:120px;
		margin: 1em 0; padding:7px 0 10px 20px;
		font: bold 14px/1 sans-serif;
		color:#c60;
		background: url("button.gif") 0 0 no-repeat;
		text-decoration: none;
		}
	#menu a:hover {	
		background-position: -157px 0;
		color: #E9BE75;
		}
	#menu a:active, .current_link {
		background-position: -314px 0;
		color:white !important; /* the important declaration helps some browsers */
		}
	
</style>
 
</head>
<body>
 
<div id="menu">
	<a href="">Menu item 1</a>
 	<a href="" class="current_link">Item no. 2</a>
	<a href="">Another (3)</a>
	<a href="">Menu item 4</a>
	<a href="">One more (5)</a>
</div>
 
                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:

Select allOpen in new window

 

by: rowejdPosted on 2008-03-11 at 17:50:22ID: 21102081

So you'd just set whatever page is the current page with that class and it'd work like I think you want it to.

 

by: adamshieldsPosted on 2008-03-11 at 18:20:11ID: 21102219

Okay I understand that. So what about using a php function to grab the current url and determine what page is open and then have an array or case statement to set the current link class or am I getting ahead of myself combining PHP in the mix. I'm trying to reduce the amount of "page specific" code there is going to be.

 

by: rowejdPosted on 2008-03-11 at 18:25:33ID: 21102252

Yes, that's exactly how I do it actually.

1)  I put all my possible page names into an array
2) I write a function (using the explode(); php function  http://us2.php.net/explode -- can also be done with parse_url http://us2.php.net/function.parse-url) to figure out what the name of the current page is.
3) I load my links based on my array in a foreach loop with a conditional--
4) The conditional states that IF my exploded (or parsed) URL page name is the same as the current page name from the array, then to apply the .current class.

 

by: rowejdPosted on 2008-03-11 at 18:36:24ID: 21102299

Here's an example of finding current page with "explode" (but this is based on a specific directory structure, you'd have to set the numeric key to work with your structure):

//Current Page
$current_page=(htmlspecialchars(utf8_decode($_SERVER['PHP_SELF'])));
$current_page=explode('/', $current_page);
////****NUMBERS WILL CHANGE WHEN DIRECTORY IS SHIFTED!  Add a number for each directory deeper****////
$current_page=$current_page[1];		

                                              
1:
2:
3:
4:
5:

Select allOpen in new window

 

by: rowejdPosted on 2008-03-11 at 18:40:37ID: 21102326

You could use a function similar to this (after you set up your $pages as an array).  This is a tad different from the CSS above, using spans with your class rather than as above...but this is copied from the way I've done it on a page of mine...so you'd need some tweaking.

function buttons($pages, $current_page){
	foreach ($pages $pagename=>$url) {
		if($page[1]==$current_section){
			$class='current';
			$style="<span class=\"$class\">";
			$end_style='</span>';
		} else {
			$style='';
			$end_style='';
		}
 
		//End Take Out
		$buttons.="\t$style<a href=\"$url\">$name</a>$end_style\n";
	}
	return $buttons;
}

                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:

Select allOpen in new window

 

by: adamshieldsPosted on 2008-03-11 at 18:41:00ID: 21102328

Okay these examples will give me plenty to work on thanks.

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...