Solved

Want the following effect!?

Posted on 1998-12-29
3
155 Views
Last Modified: 2010-04-09
I want to have the following effect, but I don't know can I do this?

On a html page, some wordings would be highlighted (differnet colour), so when someone moves the mouse cursor to those wordings, a corresponding picture would be poped up and shown just above the wordings or open a new window to show that picture. Thanks for any help!
0
Comment
Question by:hcyu
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 7

Expert Comment

by:yoren
ID: 1841099
What you want is similar to "tooltips." There's a great article about these using Javascript and DHTML at http://www.webreference.com/js/column16/
0
 
LVL 19

Accepted Solution

by:
cheekycj earned 100 total points
ID: 1841100
Here is a simple version of the code I use from www.insidedhtml.com

<HTML>
<HEAD>
<TITLE>Tooltips</TITLE>

<SCRIPT LANGUAGE="JavaScript">
<!--
 NS4 = (("Netscape"==navigator.appName) && ("4"<=parseInt(navigator.appVersion)))
 window.name = "main"
// -->
</SCRIPT>


<SCRIPT language="javascript">
  <!--
  /*  Your are permitted to reuse this code as long as the following copyright
      notice is not removed:

      This HTML tip handling is copyright 1998 by insideDHTML.com, LLC. More information about this
      code can be found at Inside Dynamic HTML: HTTP://www.insideDHTML.com
  */


  // Support for all collection
  var allSupport = document.all!=null

  function setupEventObject(e) {
    // Map NS event object to IEs
    if (e==null) return // IE returns
    window.event = e
    window.event.fromElement = e.target
    window.event.toElement = e.target
    window.event.srcElement = e.target
    window.event.x = e.x
    window.event.y = e.y
    // Route the event to the original element
    // Necessary to make sure _tip is set.
    window.event.srcElement.handleEvent(e);
  }


  function checkName(src) {
    // Look for tooltip in IE
    while ((src!=null) && (src._tip==null))
      src = src.parentElement
    return src
  }

  function getElement(elName) {
    // Get an element from its ID
    if (allSupport)
      return document.all[elName]
    else
      return document.layers[elName]
  }

  function writeContents(el, tip) {
    // Replace the contents of the tooltip
    if (allSupport)
      el.innerHTML = tip
    else {
      // In NS, insert a table to work around
      // stylesheet rendering bug.
      // NS fails to apply style sheets when writing
      // contents into a positioned element.
      el.document.open()
      el.document.write("<TABLE WIDTH=200 BORDER=1 bordercolor=black><TR><TD WIDTH=100% BGCOLOR=lightgrey>")
      el.document.write(tip)
      el.document.write("</TD></TR></TABLE>")
      el.document.close()
    }
  }

  function getOffset(el, which) {
    // Function for IE to calculate position
    // of an element.
    var amount = el["offset"+which]
    if (which=="Top")
      amount+=el.offsetHeight
    el = el.offsetParent
    while (el!=null) {
      amount+=el["offset"+which]
      el = el.offsetParent
    }
    return amount
  }
 

  function setPosition(el) {
    // Set the position of an element
    src = window.event.srcElement
    if (allSupport) {
      el.style.pixelTop = getOffset(src, "Top")
      el.style.pixelLeft = getOffset(src, "Left")
    } else
    {
      el.top = src.y + 20 //window.event.y + 15
      el.left = src.x + 75 //window.event.x
    }
  }
     
  function setVisibility(el, bDisplay) {
    // Hide or show to tip
    if (bDisplay)
      if (allSupport)
        el.style.visibility = "visible"
      else
        el.visibility = "show";
    else
      if (allSupport)
        el.style.visibility = "hidden"
      else
        el.visibility = "hidden"
  }


  function displayContents(tip) {
    // Display the tooltip.
    var el = getElement("tipBox")
    writeContents(el, tip)
    setPosition(el)
    setVisibility(el, true)
  }


  function doMouseOver(e) {
    // Mouse moves over an element
    setupEventObject(e)
    var el, tip
    if ((el = checkName(window.event.srcElement))!=null)
      if  (!el._display) {
        displayContents(el._tip)
        el._display = true
      }
  }

  function doMouseOut(e) {
    // Mouse leaves an element
    setupEventObject(e)
    el = checkName(window.event.srcElement)
    var el, tip
    if ((el = checkName(window.event.srcElement))!=null)
      if (el._display)
        if ((el.contains==null) || (!el.contains(window.event.toElement))) {
          setVisibility(getElement("tipBox"), false)
          el._display = false
        }
  }

  function doLoad() {
    // Do Loading
    if ((window.document.captureEvents==null) && (!allSupport))
      return // Not IE4 or NS4
    if (window.document.captureEvents!=null)  // NS - capture events
      window.document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT)
    window.document.onmouseover = doMouseOver;
    window.document.onmouseout = doMouseOut;
  }

  window.onload = doLoad
  // -->
</SCRIPT>
<STYLE>
  <!--
  #tipBox {position: absolute; width: 150px; z-index: 100;border: 1pt black solid; background: lightgrey; visibility: hidden}
  -->
</STYLE>


</HEAD>
<BODY BGCOLOR=white>
<DIV ID=tipBox>
</DIV>


<P>Here is a demonstration of tooltips:<BR>
<A HREF="javascript:void(0);" onMouseOver="this._tip='What can you do with<FONT COLOR=red><B>DHTML</B></FONT>';return true;">DHTML</A><br>
<A HREF="javascript:void(0);" onMouseOver="this._tip='Second test'">example</A>


</BODY>
</HTML>

------------------------------------------------------------

If you want images just change the writeContents function to output
an image tag rather than a table tag.

Also:  to change where the popup shows up relative to element change
the x and y values in the setPosition function.

Happy New year,
CJ
0
 
LVL 19

Expert Comment

by:cheekycj
ID: 1841101
BTW this works both in NS and in IE
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
This is a PowerShell web interface I use to manage some task as a network administrator. Clicking an action button on the left frame will display a form in the middle frame to input some data in textboxes, process this data in PowerShell and display…
In this tutorial viewers will learn how to style elements, such a divs, with a "drop shadow" effect using the CSS box-shadow property Start with a normal styled element, such as a div.: In the element's style, type the box shadow property: "box-shad…
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

695 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question