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Thread: switch multiple backgrounds on mouseover

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  1. #1
    Join Date
    Mar 2011
    Posts
    1

    switch multiple backgrounds on mouseover

    Hey all,

    As a JS rookie I've managed to toggle specific backgrounds on multiple mouseovers. The code below does exactly what I want, but I'm not quite satisfied with the way it's done.

    The definite webpage will contain a lot of projectboxes, and for each project I need to add two functions in my script. Not very efficient. I'm looking for a single function which works in the same way, preferably making use of an array where I can add new projectimages. Any help on this would be greatly apprciated!

    Code:
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Switch backgrounds on mouseover</title>
    <style type="text/css">
    .projectbox {
    margin-right: 15px;
    float: left;
    }
    
    .imgbox {
    width: 265px;
    height: 100px;
    display: block;
    }
    
    .imgbox a.img1_off {
    background: url(http://www.boomboxfestival.nl/test3/dummy1_off.jpg) no-repeat;	
    }
    
    .imgbox a.img1_on {
    background: url(http://www.boomboxfestival.nl/test3/dummy1_on.jpg) no-repeat;	
    }
    
    .imgbox a.img2_off {
    background: url(http://www.boomboxfestival.nl/test3/dummy2_off.jpg) no-repeat;	
    }
    
    .imgbox a.img2_on {
    background: url(http://www.boomboxfestival.nl/test3/dummy2_on.jpg) no-repeat;	
    }
    
    .imgbox a.img3_off {
    background: url(http://www.boomboxfestival.nl/test3/dummy3_off.jpg) no-repeat;	
    }
    
    .imgbox a.img3_on {
    background: url(http://www.boomboxfestival.nl/test3/dummy3_on.jpg) no-repeat;	
    }
    
    .titlebox h1 {
    font: 11px/10px Arial, Helvetica, sans-serif;
    text-transform: uppercase;
    float: left;
    margin-right: 3px;
    }
    
    .titlebox h1 a {
    display: block;
    background: #ccc;
    color: #fff;
    text-decoration: none;
    padding: 2px 3px;
    }
    
    .titlebox h1 a.title_off {
    background: #ccc;	
    }
    
    .titlebox h1 a.title_on {
    background: #000;	
    }
    </style>
    
    <script language="javascript" type="text/javascript">
    
    function switchTitle(objDivID)
    {
    	document.getElementById(objDivID).className = 'title_on';
    }
    
    function resetTitle(objDivID)
    {
      document.getElementById(objDivID).className = 'title_off';
    }  
    
    function switchImage1(objDivID)
    {
    	document.getElementById(objDivID).className = 'img1_on imgbox';
    }
    
    function resetImage1(objDivID)
    {
      document.getElementById(objDivID).className = 'img1_off imgbox';
    }
    
    function switchImage2(objDivID)
    {
    	document.getElementById(objDivID).className = 'img2_on imgbox';
    }
    
    function resetImage2(objDivID)
    {
      document.getElementById(objDivID).className = 'img2_off imgbox';
    }
    
    function switchImage3(objDivID)
    {
    	document.getElementById(objDivID).className = 'img3_on imgbox';
    }
    
    function resetImage3(objDivID)
    {
      document.getElementById(objDivID).className = 'img3_off imgbox';
    }
    
    </script>
    </head>
    
    <body>
    
    <div class="projectbox">
       <div class="imgbox">
          <a href="#" id="projectimg1" class="img1_off imgbox" title="Bekijk die toffe ****" 
          onmouseover="switchImage1('projectimg1'); switchTitle('projecttitle1')" 
          onmouseout="resetImage1('projectimg1'); resetTitle('projecttitle1')"></a>
       </div>
       <div class="titlebox">
          <h1><a href="#" id="projecttitle1" class="title_off" 
          onmouseover="switchImage1('projectimg1'); switchTitle('projecttitle1')" 
          onmouseout="resetImage1('projectimg1'); resetTitle('projecttitle1')">Title project 1</a></h1>
       </div>
    </div>
    <div class="projectbox">
       <div class="imgbox">
          <a href="#" id="projectimg2" class="img2_off imgbox" title="Bekijk die toffe ****" 
          onmouseover="switchImage2('projectimg2'); switchTitle('projecttitle2')" 
          onmouseout="resetImage2('projectimg2'); resetTitle('projecttitle2')"></a>
       </div>
       <div class="titlebox">
          <h1><a href="#" id="projecttitle2" class="title_off" 
          onmouseover="switchImage2('projectimg2'); switchTitle('projecttitle2')" 
          onmouseout="resetImage2('projectimg2'); resetTitle('projecttitle2')">Title project 2</a></h1>
       </div>
    </div>
    <div class="projectbox">
       <div class="imgbox">
          <a href="#" id="projectimg3" class="img3_off imgbox" title="Bekijk die toffe ****" 
          onmouseover="switchImage3('projectimg3'); switchTitle('projecttitle3')" 
          onmouseout="resetImage3('projectimg3'); resetTitle('projecttitle3')"></a>
       </div>
       <div class="titlebox">
          <h1><a href="#" id="projecttitle3" class="title_off" 
          onmouseover="switchImage3('projectimg3'); switchTitle('projecttitle3')" 
          onmouseout="resetImage3('projectimg3'); resetTitle('projecttitle3')">Title project 3</a></h1>
       </div>
    </div>
    
    </body>
    </html>

  2. #2
    Join Date
    Jun 2004
    Location
    Portsmouth UK
    Posts
    2,709
    Code:
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Switch backgrounds on mouseover</title>
    <style type="text/css">
    .projectbox {
    margin-right: 15px;
    float: left;
    }
    
    .imgbox {
    width: 265px;
    height: 100px;
    display: block;
    }
    
    .imgbox a.img1_off {
    background: url(http://www.vicsjavascripts.org.uk/StdImages/Egypt5.jpg) no-repeat;
    }
    
    .imgbox a.img1_on {
    background: url(http://www.vicsjavascripts.org.uk/StdImages/Egypt6.jpg) no-repeat;
    }
    
    .imgbox a.img2_off {
    background: url(http://www.vicsjavascripts.org.uk/StdImages/Egypt7.jpg) no-repeat;
    }
    
    .imgbox a.img2_on {
    background: url(http://www.vicsjavascripts.org.uk/StdImages/Egypt8.jpg) no-repeat;
    }
    
    .imgbox a.img3_off {
    background: url(http://www.vicsjavascripts.org.uk/StdImages/Egypt9.jpg) no-repeat;
    }
    
    .imgbox a.img3_on {
    background: url(http://www.vicsjavascripts.org.uk/StdImages/Egypt11.jpg) no-repeat;
    }
    
    .titlebox h1 {
    font: 11px/10px Arial, Helvetica, sans-serif;
    text-transform: uppercase;
    float: left;
    margin-right: 3px;
    }
    
    .titlebox h1 a {
    display: block;
    background: #ccc;
    color: #fff;
    text-decoration: none;
    padding: 2px 3px;
    }
    
    .titlebox h1 a.title_off {
    background: #ccc;
    }
    
    .titlebox h1 a.title_on {
    background: #000;
    }
    </style>
    
    <script type="text/javascript">
    
    function Swap(obj,imgcls,titlecls){
     var as=obj.getElementsByTagName('A');
     as[0].className=imgcls;
     as[1].className=titlecls;
    }
    </script>
    </head>
    
    <body>
    
    <div class="projectbox" onmouseover="Swap(this,'img1_on imgbox','title_on');" onmouseout="Swap(this,'img1_off imgbox','title_off');">
       <div class="imgbox">
          <a href="#" class="img1_off imgbox" title="Bekijk die toffe ****"
    
          ></a>
       </div>
       <div class="titlebox">
          <h1><a href="#" class="title_off"
    
          >Title project 1</a></h1>
       </div>
    </div>
    
    <div class="projectbox"onmouseover="Swap(this,'img2_on imgbox','title_on');" onmouseout="Swap(this,'img2_off imgbox','title_off');">
       <div class="imgbox">
          <a href="#" class="img2_off imgbox" title="Bekijk die toffe ****"
          ></a>
       </div>
       <div class="titlebox">
          <h1><a href="#" id="projecttitle2" class="title_off"
          >Title project 2</a></h1>
       </div>
    </div>
    
    <div class="projectbox"onmouseover="Swap(this,'img3_on imgbox','title_on');" onmouseout="Swap(this,'img3_off imgbox','title_off');">
       <div class="imgbox">
          <a href="#" class="img3_off imgbox" title="Bekijk die toffe ****"
          ></a>
       </div>
       <div class="titlebox">
          <h1><a href="#" class="title_off"
          >Title project 3</a></h1>
       </div>
    </div>
    
    </body>
    </html>
    Vic

    God loves you and will never love you less.

    http://www.vicsjavascripts.org/Home.htm
    If my post has been useful please donate to http://www.operationsmile.org.uk/

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HTML5 Development Center

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